Primary malignant melanoma of the larynx is extremely rare.This paper reports a case of a patient with primary malignant melanoma of the larynx.Preoperative laryngoscopy revealed a cauliflower-like mass in the supragl...Primary malignant melanoma of the larynx is extremely rare.This paper reports a case of a patient with primary malignant melanoma of the larynx.Preoperative laryngoscopy revealed a cauliflower-like mass in the supraglottic region,and a CT scan of the pharynx suggested laryngeal cancer with cervical lymph node metastasis.The patient underwent a total laryngectomy with lymph node dissection,and postoperative pathology confirmed a malignant melanoma in the supraglottic region of the larynx.展开更多
BACKGROUND Primary malignant melanoma of the cervix(PMMC)is an extremely rare disease that originates from primary cervical malignant melanoma and frequently re-presents a challenge in disease diagnosis due to unclari...BACKGROUND Primary malignant melanoma of the cervix(PMMC)is an extremely rare disease that originates from primary cervical malignant melanoma and frequently re-presents a challenge in disease diagnosis due to unclarified clinical and histo-logical presentations,particularly those without melanin.CASE SUMMARY Here,we report a case of amelanotic PMMC,with a history of breast cancer and thyroid carcinoma.The patient was finally diagnosed by immunohistochemical staining and staged as IB2 based on the International Federation of Gynecology and Obstetrics with reference to National Comprehensive Cancer Network guide-lines and was treated with radical hysterectomy,bilateral salpingo-oophorectomy and pelvic lymphadenectomy.She then received combination therapy consisting of immunotherapy with tislelizumab and radiofrequency hyperthermia.She has remained free of disease for more than 1 year.CONCLUSION The differential diagnosis process reenforced the notion that immunohisto-chemical staining is the most reliable approach for amelanotic PMMC diagnosis.Due to the lack of established therapeutic guidelines,empirical information from limited available studies does not provide the rationale for treatment-decision making.By integrating'omics'technologies and patient-derived xenografts or mini-patient-derived xenograft models this will help to identify selective thera-peutic window(s)and screen the appropriate therapeutics for targeted therapies,immune checkpoint blockade or combination therapy strategies effectively and precisely that will ultimately improve patient survival.展开更多
BACKGROUND Primary malignant melanoma of the esophagus(PMME)is a rare malignant disease whose clinical and molecular pathological features,origin and pathoge-nesis,diagnosis and treatment have not been elucidated.CASE...BACKGROUND Primary malignant melanoma of the esophagus(PMME)is a rare malignant disease whose clinical and molecular pathological features,origin and pathoge-nesis,diagnosis and treatment have not been elucidated.CASE SUMMARY In this paper,we report a case of a 73-year-old male with PMME.The patient complained of progressive dysphagia accompanied by substantial weight loss.Gastroscopy revealed a purple black bulging-type mass in the lower esophagus with easy bleeding on contact and scattered satellite lesions in the stomach.Histopathological biopsy revealed melanocytes in the esophageal mucosa.Physical examination and multidisciplinary consultation led to diagnostic exclusion of melanoma originating in other organs,such as the skin.Through this case report and literature review,we aimed to describe the clinical and molecular pathological features of PMME and summarize possible pathways of pathoge-nesis as well as cutting-edge therapeutic advances.CONCLUSION PMME is a rare malignancy of the esophagus with a poor prognosis.Clinicians should raise their awareness and be able to identify early lesions.展开更多
BACKGROUND Primary malignant melanoma of the esophagus is a rare malignant tumor of the esophagus,and its combination with squamous cell carcinoma is also rare.Here,we report the diagnosis and treatment of a case of p...BACKGROUND Primary malignant melanoma of the esophagus is a rare malignant tumor of the esophagus,and its combination with squamous cell carcinoma is also rare.Here,we report the diagnosis and treatment of a case of primary esophageal malignant melanoma combined with squamous cell carcinoma.CASE SUMMARY A middle-aged man underwent gastroscopy for dysphagia.Gastroscopy revealed multiple bulging esophageal lesions,and after pathologic and immunohistochemical analyses,the patient was finally diagnosed with"malignant melanoma with squamous cell carcinoma".This patient received comprehensive treatment.After one year of follow-up,the patient was in good condition,and the esophageal lesions seen on gastroscopy were controlled,but unfortunately,liver metastasis occurred.CONCLUSION When multiple esophageal lesions are present,the possibility of multiple pathological sources should be considered.This patient was diagnosed with primary esophageal malignant melanoma combined with squamous cell carcinoma.展开更多
Primary malignant melanoma of the liver is an exceedingly rare tumor. Only 12 cases have been reported in the worldwide literature. We present a case of isolated malignant melanoma of the liver occurring in a 36-year-...Primary malignant melanoma of the liver is an exceedingly rare tumor. Only 12 cases have been reported in the worldwide literature. We present a case of isolated malignant melanoma of the liver occurring in a 36-year-old Chinese male patient. Comprehensive dermatologic and ophthalmologic examinations revealed no evidence of a cutaneous or ocular primary lesion. Other lesions in brain, respiratory tract, lung, gastrointestinal tract and anus, were not demonstrated by serial position emission tomography (PET). Microscopic examination of the resected specimen revealed a malignant melanoma, which was confi rmed by immunohistochemical staining for HMB-45, S-100 protein, melanoma-pan and vimentin. Moreover, electron microscopy demonstrated melanosomes in tumor cell cytoplasm. Our case shows that primary malignant melanoma may occur in the liver and should be considered when the histopathological appearance is not typical for other hepatic neoplasm.展开更多
An 83-year-old Chinese woman presented with a 3-month history of dysphagia.She also had a history of hypertension,type 2 diabetes,fundus hemorrhage,and cataract but no history of cutaneous,ocular,or other-site melanom...An 83-year-old Chinese woman presented with a 3-month history of dysphagia.She also had a history of hypertension,type 2 diabetes,fundus hemorrhage,and cataract but no history of cutaneous,ocular,or other-site melanomas.Upper gastrointestinal tract angiography revealed gastritis and duodenal diverticulum;thus,an endoscopic review was recommended.Enhanced computed tomography of the chest and upper abdomen revealed the following:(1)Esophageal space-occupying lesions and mediastinal lymph node enlargement(considering the high possibility of esophageal cancer,further endoscopy was recommended)and(2)A small amount of right pleural effusion,with no significant lymph node infiltration or distant metastasis.Esophagoscopy identified a bulge mass blocking the esophagus from 23 to 30 cm from the incisors.The upper mass had a spherical clustering,while the lower mass significantly festered.Pathological biopsy samples were obtained from the esophagus 23 and 28 cm from the incisors.Tissue biopsy showed proliferation of large round tumor cells and melanocytes.Immunohistochemistry showed positive findings for HMB45 and MelanA;partially positive findings for S100,CK7,CK5/6,CAM5.2,LCA,P63,and TTF-1;and negative findings for Syn.The Ki-67 positivity index was approximately 60%.Based on these findings,the patient was diagnosed with malignant esophageal melanoma with enlarged mediastinal lymph nodes.She was then treated with five cycles of camrelizumab therapy combined with chemotherapy from October 18,2019,to May 5,2020.Gastroscopy review following two courses of combination therapy revealed that the esophagus was 23-25 cm away from the incisors,and there were two continuous uplifted and beaded masses that had a smooth and black surface,with each of them having a length and diameter of approximately 1 cm.Melanosis of the mucosa around the lumen was observed at 40 cm from the incisors to the cardia;the dentate margin was clear;and the cardia had no stenosis.The patient then received five courses of combination therapy and became consistently stable after partial remission.No severe adverse events related to the immunotherapy were recorded.Camrelizumab may be a viable treatment option for patients with PMME.Additional evidence from future clinical trials and research is necessary to fully validate our findings.展开更多
BACKGROUND Primary malignant melanoma of the esophagus(PMME) is a rare malignant disease and has not been well characterized in terms of clinicopathology and survival.AIM To investigate the clinical features and survi...BACKGROUND Primary malignant melanoma of the esophagus(PMME) is a rare malignant disease and has not been well characterized in terms of clinicopathology and survival.AIM To investigate the clinical features and survival factors in Chinese patients with PMME.METHODS The clinicopathological findings of ten cases with PMME treated at Henan Provincial People’s Hospital were summarized. Moreover, the English-and Chinese-language literature that focused on Chinese patients with PMME from 1980 to September 2021 was reviewed and analyzed. Univariate and multivariate analyses were employed to investigate the clinicopathologic factors that might be associated with survival.RESULTS A total of 290 Chinese patients with PMME, including ten from our hospital and 280 from the literature were enrolled in the present study. Only about half of the patients(55.8%) were accurately diagnosed before surgery. Additionally, 91.1% of the patients received esophagectomy, and 88 patients(36.5%) received adjuvant therapy after surgery. The frequency of lymph node metastasis(LNM) was 51.2%(107/209), and LNM had a positive rate of 45.3% even when the tumor was confined to the submucosal layer. The risk of LNM increased significantly with the p T stage [P < 0.001, odds ratio(OR): 2.47, 95% confidence interval(CI): 1.72-3.56] and larger tumor size(P = 0.006, OR: 1.21, 95%CI: 1.05-1.38). The median overall survival(OS) was 11.0 mo(range: 1-204 mo). The multivariate Cox analysis showed both the p T stage [P = 0.005, hazard ratio(HR): 1.70, 95%CI: 1.17-2.47] and LNM(P = 0.009, HR: 1.78, 95%CI: 1.15-2.74) were independent prognostic factors for OS. The median disease-free survival(DFS) was 5.3 mo(range: 0.8-114.1 mo). The multivariate analysis indicated that only the advanced p T stage(P = 0.02, HR: 1.93, 95%CI: 1.09-3.42) was a significant independent indicator of poor RFS in patients with PMME.CONCLUSION The correct diagnosis of PMME before surgery is low, and physicians should pay more attention to avoid a misdiagnosis or missed diagnosis. Extended lymph node dissection should be emphasized in surgery for PMME even though the tumor is confined to the submucosal layer. Both the LNM and p T stage are independent prognosis factors for OS, and the p T stage is the prognosis factor for DFS in patients with PMME.展开更多
Objective:To estimate electroporation(EP) influence on malignant and normal cells.Methods: Two cell lines including human malignant melanoma(Me-43) and normal human gingival fibroblast(HCFs) were used.EP parameters we...Objective:To estimate electroporation(EP) influence on malignant and normal cells.Methods: Two cell lines including human malignant melanoma(Me-43) and normal human gingival fibroblast(HCFs) were used.EP parameters were the following:230,1000,1 730,2 300 V/cm;30 μ s by 3 impulses for every case.The viability of cells after EP was estimated by MTT assay. The ullrastructural analysis was observed by transmission electron microscope(Zeiss EM 900). Results:In the current study we observed the intracellular effect following EP on Me-43 and HGF cells.At the conditions applied,we did not observe any significant damage of mitochondrial activity in both cell lines treated by EP.Conversely,we showed that EP in some conditions can stimulate cells to proliferation.Some changes induced by EP were only visible in electron microscopy.In fibroblast cells we observed significant changes in lower parameters of EP(230 and 1 000 V/cm).After applying higher electric field intensities(2 300 V/cm) we detected many vacuoles,myelin-like bodies and swallowed endoplasmic reticulum.In melanoma cells such strong pathological modifications after EP were not observed,in comparison with control cells. The ultrastructure of both treated cell lines was changed according to the applied parameters of EP.Conclusions:We can claim that EP conditions are cell line dependent.In terms of the intracellular morphology,human fibroblasts are more sensitive to electric field as compared with melanoma cells.Optimal conditions should be determined for each cell line.Summarizing our study,we can conclude that EP is not an invasive method for human normal and malignant cells. This technique can be safely applied in chemotherapy for delivering drugs into tumor cells.展开更多
Dear Sir,We write to present a case report of primary malignant melanoma of the lacrimal sac.Tumors of the lacrimal sac are rare,and most of them are benign and of epithelial origin[1].Malignant melanoma of the lacrim...Dear Sir,We write to present a case report of primary malignant melanoma of the lacrimal sac.Tumors of the lacrimal sac are rare,and most of them are benign and of epithelial origin[1].Malignant melanoma of the lacrimal sac is even rarer accounting for 5%of lacrimal sac tumors and 0.7%of ocular melanoma[2,3].To our knowledge,only 27 cases with complete clinical information have ever been reported worldwide in English literature[4-8].The disease has an insidious onset and masquerades as a chronic展开更多
BACKGROUND Primary malignant melanoma of the lung (PMML) is a rare and highly malignanttumor with a poor prognosis. Here, we report a PMML case diagnosed bycomputed tomography (CT)-guided percutaneous biopsy, describe...BACKGROUND Primary malignant melanoma of the lung (PMML) is a rare and highly malignanttumor with a poor prognosis. Here, we report a PMML case diagnosed bycomputed tomography (CT)-guided percutaneous biopsy, describe itspathological features and review relevant literature to improve our understandingof this tumor.CASE SUMMARY A 64-year-old Chinese female presented with productive cough for 7 mo. A chestCT scan showed a large and space-occupying lesion in Lingual lobe. Positronemission tomography-CT revealed multiple nodules located in the superior lobeapicoposterior segment of her left lung. Brain magnetic resonance imagingshowed numerous enhancing nodules, suggesting brain metastasis. AbdominalCT scan did not show any abnormalities. By CT-guided percutaneous biopsy, fourpieces of gray and taupe tissues (1 cm length and 0.1 mm in diameter) wereobtained. After pathologic examination, the tumor was found to consist ofepidermal and nested small round cells, fibrosis and thin-walled blood vessels.The finding was suggestive of malignant melanoma. To confirm the diagnosis,pathological morphology and immunophenotypic features of the biopsyspecimens were observed. The patient denied any history of skin tumors. Noabnormal lesions were detected in other sites of the body. Molecular testing waspositive for wild-type EGFR and KIT gene mutations. Finally, the clinical andpathological findings suggested PMML.CONCLUSION PMML is very rare, and the percutaneous biopsy tissue is limited. Therefore,comprehensive consideration of histology, immunohistochemistry, imaging, andclinical information is important for the diagnosis of PMML.展开更多
BACKGROUND Primary intracranial malignant melanoma(PIMM)is rare,and its prognosis is very poor.It is not clear what systematic treatment strategy can achieve long-term survival.This case study attempted to identify th...BACKGROUND Primary intracranial malignant melanoma(PIMM)is rare,and its prognosis is very poor.It is not clear what systematic treatment strategy can achieve long-term survival.This case study attempted to identify the optimal strategy for long-term survival outcomes by reviewing the PIMM patient with the longest survival following comprehensive treatment and by reviewing the related literature.CASE SUMMARY The patient is a 47-year-old Chinese man who suffered from dizziness and gait disturbance.He underwent surgery for right cerebellum melanoma and was subsequently diagnosed by pathology in June 2000.After the surgery,the patient received three cycles of chemotherapy but relapsed locally within 4 mo.Following the second surgery for total tumor resection,the patient received an injection of Newcastle disease virus-modified tumor vaccine,interferon,andβ-elemene treatment.The patient was tumor-free with a normal life for 21 years before the onset of the recurrence of melanoma without any symptoms in July 2021.A third gross-total resection with adjuvant radiotherapy and temozolomide therapy was performed.Brain magnetic resonance imaging showed no residual tumor or recurrence 3 mo after the 3rd operation,and the patient recovered well without neurological dysfunction until the last follow-up in June 2022,which was 22 years following the initial treatment.CONCLUSION It is important for patients with PIMM to receive comprehensive treatment to enable the application of the most appropriate treatment strategies.Long-term survival is not impossible in patients with these malignancies.展开更多
Malignant melanoma involving the respiratory tract, which is predominantly found in the skin, is nearly metastatic and true primary tumours are very rare） To date, only 32 cases have been reported in English literatu...Malignant melanoma involving the respiratory tract, which is predominantly found in the skin, is nearly metastatic and true primary tumours are very rare） To date, only 32 cases have been reported in English literature and 22 cases of primary malignant melanoma of the lung have been reported in Chinese literature.展开更多
原发性肺恶性黑色素瘤(primary malignant melanoma of lung,PMML)属于罕见肿瘤,约占所有原发性肺部肿瘤的0.01%及所有恶性黑色素瘤的0.4%^([1])。本文介绍了1例PMML伴右侧腋窝淋巴结、颅内多发转移的病例。1病例报告患者男性,59岁,因...原发性肺恶性黑色素瘤(primary malignant melanoma of lung,PMML)属于罕见肿瘤,约占所有原发性肺部肿瘤的0.01%及所有恶性黑色素瘤的0.4%^([1])。本文介绍了1例PMML伴右侧腋窝淋巴结、颅内多发转移的病例。1病例报告患者男性,59岁,因“体检发现左下肺占位1周”就诊于我院。胸部增强CT(见图1A-B)提示左肺下叶占位,左侧胸膜、右肺、右侧腋窝淋巴结转移可能。展开更多
Primary malignant melanoma of the esophagus is a raretumor that accounts for only 0.1％ of primary esophagealneoplasms. Although it was once thought that primarymelanoma could not arise in the esophagus hecause of the...Primary malignant melanoma of the esophagus is a raretumor that accounts for only 0.1％ of primary esophagealneoplasms. Although it was once thought that primarymelanoma could not arise in the esophagus hecause of thelack of precursor cells, it has since been shown inautopsy series that 4％-8％ of individuals havemelanoblasts in the esophageal mucosa.~2 To date,approximately 200 cases of primary esophageal malignantmelanoma have been reported in global literatures whileless than 20 cases of primary esophageal malignantmelanoma have been reported in China.2-4In this reportwe present a case of primary malignant melanoma of theesophagus in a Chinese man.展开更多
文摘Primary malignant melanoma of the larynx is extremely rare.This paper reports a case of a patient with primary malignant melanoma of the larynx.Preoperative laryngoscopy revealed a cauliflower-like mass in the supraglottic region,and a CT scan of the pharynx suggested laryngeal cancer with cervical lymph node metastasis.The patient underwent a total laryngectomy with lymph node dissection,and postoperative pathology confirmed a malignant melanoma in the supraglottic region of the larynx.
基金Supported by the National Natural Science Foundation of China,No.82073258the Excellent Youth Program of Shanghai Jiao Tong University Affiliated Sixth People's Hospital,No.ynyq202105+2 种基金the Research Fund of Shanghai Tongren Hospital,Shanghai Jiao Tong University School of Medicine,No.TRYJ201702Start-up Funding for Talent Introduction,Shanghai Tongren Hospital,Shanghai Jiao Tong University School of Medicine,No.TR2020rc04Special Project of Medical and Health Research in Changning District,Shanghai,No.CNKW2017Y09.
文摘BACKGROUND Primary malignant melanoma of the cervix(PMMC)is an extremely rare disease that originates from primary cervical malignant melanoma and frequently re-presents a challenge in disease diagnosis due to unclarified clinical and histo-logical presentations,particularly those without melanin.CASE SUMMARY Here,we report a case of amelanotic PMMC,with a history of breast cancer and thyroid carcinoma.The patient was finally diagnosed by immunohistochemical staining and staged as IB2 based on the International Federation of Gynecology and Obstetrics with reference to National Comprehensive Cancer Network guide-lines and was treated with radical hysterectomy,bilateral salpingo-oophorectomy and pelvic lymphadenectomy.She then received combination therapy consisting of immunotherapy with tislelizumab and radiofrequency hyperthermia.She has remained free of disease for more than 1 year.CONCLUSION The differential diagnosis process reenforced the notion that immunohisto-chemical staining is the most reliable approach for amelanotic PMMC diagnosis.Due to the lack of established therapeutic guidelines,empirical information from limited available studies does not provide the rationale for treatment-decision making.By integrating'omics'technologies and patient-derived xenografts or mini-patient-derived xenograft models this will help to identify selective thera-peutic window(s)and screen the appropriate therapeutics for targeted therapies,immune checkpoint blockade or combination therapy strategies effectively and precisely that will ultimately improve patient survival.
文摘BACKGROUND Primary malignant melanoma of the esophagus(PMME)is a rare malignant disease whose clinical and molecular pathological features,origin and pathoge-nesis,diagnosis and treatment have not been elucidated.CASE SUMMARY In this paper,we report a case of a 73-year-old male with PMME.The patient complained of progressive dysphagia accompanied by substantial weight loss.Gastroscopy revealed a purple black bulging-type mass in the lower esophagus with easy bleeding on contact and scattered satellite lesions in the stomach.Histopathological biopsy revealed melanocytes in the esophageal mucosa.Physical examination and multidisciplinary consultation led to diagnostic exclusion of melanoma originating in other organs,such as the skin.Through this case report and literature review,we aimed to describe the clinical and molecular pathological features of PMME and summarize possible pathways of pathoge-nesis as well as cutting-edge therapeutic advances.CONCLUSION PMME is a rare malignancy of the esophagus with a poor prognosis.Clinicians should raise their awareness and be able to identify early lesions.
文摘BACKGROUND Primary malignant melanoma of the esophagus is a rare malignant tumor of the esophagus,and its combination with squamous cell carcinoma is also rare.Here,we report the diagnosis and treatment of a case of primary esophageal malignant melanoma combined with squamous cell carcinoma.CASE SUMMARY A middle-aged man underwent gastroscopy for dysphagia.Gastroscopy revealed multiple bulging esophageal lesions,and after pathologic and immunohistochemical analyses,the patient was finally diagnosed with"malignant melanoma with squamous cell carcinoma".This patient received comprehensive treatment.After one year of follow-up,the patient was in good condition,and the esophageal lesions seen on gastroscopy were controlled,but unfortunately,liver metastasis occurred.CONCLUSION When multiple esophageal lesions are present,the possibility of multiple pathological sources should be considered.This patient was diagnosed with primary esophageal malignant melanoma combined with squamous cell carcinoma.
文摘Primary malignant melanoma of the liver is an exceedingly rare tumor. Only 12 cases have been reported in the worldwide literature. We present a case of isolated malignant melanoma of the liver occurring in a 36-year-old Chinese male patient. Comprehensive dermatologic and ophthalmologic examinations revealed no evidence of a cutaneous or ocular primary lesion. Other lesions in brain, respiratory tract, lung, gastrointestinal tract and anus, were not demonstrated by serial position emission tomography (PET). Microscopic examination of the resected specimen revealed a malignant melanoma, which was confi rmed by immunohistochemical staining for HMB-45, S-100 protein, melanoma-pan and vimentin. Moreover, electron microscopy demonstrated melanosomes in tumor cell cytoplasm. Our case shows that primary malignant melanoma may occur in the liver and should be considered when the histopathological appearance is not typical for other hepatic neoplasm.
基金Supported by a grant from the Qingdao 2020 Medical Scientific Research Guidance Plan(No.2020-WJZD036)。
文摘An 83-year-old Chinese woman presented with a 3-month history of dysphagia.She also had a history of hypertension,type 2 diabetes,fundus hemorrhage,and cataract but no history of cutaneous,ocular,or other-site melanomas.Upper gastrointestinal tract angiography revealed gastritis and duodenal diverticulum;thus,an endoscopic review was recommended.Enhanced computed tomography of the chest and upper abdomen revealed the following:(1)Esophageal space-occupying lesions and mediastinal lymph node enlargement(considering the high possibility of esophageal cancer,further endoscopy was recommended)and(2)A small amount of right pleural effusion,with no significant lymph node infiltration or distant metastasis.Esophagoscopy identified a bulge mass blocking the esophagus from 23 to 30 cm from the incisors.The upper mass had a spherical clustering,while the lower mass significantly festered.Pathological biopsy samples were obtained from the esophagus 23 and 28 cm from the incisors.Tissue biopsy showed proliferation of large round tumor cells and melanocytes.Immunohistochemistry showed positive findings for HMB45 and MelanA;partially positive findings for S100,CK7,CK5/6,CAM5.2,LCA,P63,and TTF-1;and negative findings for Syn.The Ki-67 positivity index was approximately 60%.Based on these findings,the patient was diagnosed with malignant esophageal melanoma with enlarged mediastinal lymph nodes.She was then treated with five cycles of camrelizumab therapy combined with chemotherapy from October 18,2019,to May 5,2020.Gastroscopy review following two courses of combination therapy revealed that the esophagus was 23-25 cm away from the incisors,and there were two continuous uplifted and beaded masses that had a smooth and black surface,with each of them having a length and diameter of approximately 1 cm.Melanosis of the mucosa around the lumen was observed at 40 cm from the incisors to the cardia;the dentate margin was clear;and the cardia had no stenosis.The patient then received five courses of combination therapy and became consistently stable after partial remission.No severe adverse events related to the immunotherapy were recorded.Camrelizumab may be a viable treatment option for patients with PMME.Additional evidence from future clinical trials and research is necessary to fully validate our findings.
文摘BACKGROUND Primary malignant melanoma of the esophagus(PMME) is a rare malignant disease and has not been well characterized in terms of clinicopathology and survival.AIM To investigate the clinical features and survival factors in Chinese patients with PMME.METHODS The clinicopathological findings of ten cases with PMME treated at Henan Provincial People’s Hospital were summarized. Moreover, the English-and Chinese-language literature that focused on Chinese patients with PMME from 1980 to September 2021 was reviewed and analyzed. Univariate and multivariate analyses were employed to investigate the clinicopathologic factors that might be associated with survival.RESULTS A total of 290 Chinese patients with PMME, including ten from our hospital and 280 from the literature were enrolled in the present study. Only about half of the patients(55.8%) were accurately diagnosed before surgery. Additionally, 91.1% of the patients received esophagectomy, and 88 patients(36.5%) received adjuvant therapy after surgery. The frequency of lymph node metastasis(LNM) was 51.2%(107/209), and LNM had a positive rate of 45.3% even when the tumor was confined to the submucosal layer. The risk of LNM increased significantly with the p T stage [P < 0.001, odds ratio(OR): 2.47, 95% confidence interval(CI): 1.72-3.56] and larger tumor size(P = 0.006, OR: 1.21, 95%CI: 1.05-1.38). The median overall survival(OS) was 11.0 mo(range: 1-204 mo). The multivariate Cox analysis showed both the p T stage [P = 0.005, hazard ratio(HR): 1.70, 95%CI: 1.17-2.47] and LNM(P = 0.009, HR: 1.78, 95%CI: 1.15-2.74) were independent prognostic factors for OS. The median disease-free survival(DFS) was 5.3 mo(range: 0.8-114.1 mo). The multivariate analysis indicated that only the advanced p T stage(P = 0.02, HR: 1.93, 95%CI: 1.09-3.42) was a significant independent indicator of poor RFS in patients with PMME.CONCLUSION The correct diagnosis of PMME before surgery is low, and physicians should pay more attention to avoid a misdiagnosis or missed diagnosis. Extended lymph node dissection should be emphasized in surgery for PMME even though the tumor is confined to the submucosal layer. Both the LNM and p T stage are independent prognosis factors for OS, and the p T stage is the prognosis factor for DFS in patients with PMME.
基金Suppoted by statutory funds of Medical Wroelaw University andresearch Tellowship within"Development Program of Wroclaw Medical University"funded from European Social Fund.Human CapitalNational Cohesion Strategy(Contract No.UDA-POKL.04.01.01-00-010/08-00)
文摘Objective:To estimate electroporation(EP) influence on malignant and normal cells.Methods: Two cell lines including human malignant melanoma(Me-43) and normal human gingival fibroblast(HCFs) were used.EP parameters were the following:230,1000,1 730,2 300 V/cm;30 μ s by 3 impulses for every case.The viability of cells after EP was estimated by MTT assay. The ullrastructural analysis was observed by transmission electron microscope(Zeiss EM 900). Results:In the current study we observed the intracellular effect following EP on Me-43 and HGF cells.At the conditions applied,we did not observe any significant damage of mitochondrial activity in both cell lines treated by EP.Conversely,we showed that EP in some conditions can stimulate cells to proliferation.Some changes induced by EP were only visible in electron microscopy.In fibroblast cells we observed significant changes in lower parameters of EP(230 and 1 000 V/cm).After applying higher electric field intensities(2 300 V/cm) we detected many vacuoles,myelin-like bodies and swallowed endoplasmic reticulum.In melanoma cells such strong pathological modifications after EP were not observed,in comparison with control cells. The ultrastructure of both treated cell lines was changed according to the applied parameters of EP.Conclusions:We can claim that EP conditions are cell line dependent.In terms of the intracellular morphology,human fibroblasts are more sensitive to electric field as compared with melanoma cells.Optimal conditions should be determined for each cell line.Summarizing our study,we can conclude that EP is not an invasive method for human normal and malignant cells. This technique can be safely applied in chemotherapy for delivering drugs into tumor cells.
文摘Dear Sir,We write to present a case report of primary malignant melanoma of the lacrimal sac.Tumors of the lacrimal sac are rare,and most of them are benign and of epithelial origin[1].Malignant melanoma of the lacrimal sac is even rarer accounting for 5%of lacrimal sac tumors and 0.7%of ocular melanoma[2,3].To our knowledge,only 27 cases with complete clinical information have ever been reported worldwide in English literature[4-8].The disease has an insidious onset and masquerades as a chronic
文摘BACKGROUND Primary malignant melanoma of the lung (PMML) is a rare and highly malignanttumor with a poor prognosis. Here, we report a PMML case diagnosed bycomputed tomography (CT)-guided percutaneous biopsy, describe itspathological features and review relevant literature to improve our understandingof this tumor.CASE SUMMARY A 64-year-old Chinese female presented with productive cough for 7 mo. A chestCT scan showed a large and space-occupying lesion in Lingual lobe. Positronemission tomography-CT revealed multiple nodules located in the superior lobeapicoposterior segment of her left lung. Brain magnetic resonance imagingshowed numerous enhancing nodules, suggesting brain metastasis. AbdominalCT scan did not show any abnormalities. By CT-guided percutaneous biopsy, fourpieces of gray and taupe tissues (1 cm length and 0.1 mm in diameter) wereobtained. After pathologic examination, the tumor was found to consist ofepidermal and nested small round cells, fibrosis and thin-walled blood vessels.The finding was suggestive of malignant melanoma. To confirm the diagnosis,pathological morphology and immunophenotypic features of the biopsyspecimens were observed. The patient denied any history of skin tumors. Noabnormal lesions were detected in other sites of the body. Molecular testing waspositive for wild-type EGFR and KIT gene mutations. Finally, the clinical andpathological findings suggested PMML.CONCLUSION PMML is very rare, and the percutaneous biopsy tissue is limited. Therefore,comprehensive consideration of histology, immunohistochemistry, imaging, andclinical information is important for the diagnosis of PMML.
文摘BACKGROUND Primary intracranial malignant melanoma(PIMM)is rare,and its prognosis is very poor.It is not clear what systematic treatment strategy can achieve long-term survival.This case study attempted to identify the optimal strategy for long-term survival outcomes by reviewing the PIMM patient with the longest survival following comprehensive treatment and by reviewing the related literature.CASE SUMMARY The patient is a 47-year-old Chinese man who suffered from dizziness and gait disturbance.He underwent surgery for right cerebellum melanoma and was subsequently diagnosed by pathology in June 2000.After the surgery,the patient received three cycles of chemotherapy but relapsed locally within 4 mo.Following the second surgery for total tumor resection,the patient received an injection of Newcastle disease virus-modified tumor vaccine,interferon,andβ-elemene treatment.The patient was tumor-free with a normal life for 21 years before the onset of the recurrence of melanoma without any symptoms in July 2021.A third gross-total resection with adjuvant radiotherapy and temozolomide therapy was performed.Brain magnetic resonance imaging showed no residual tumor or recurrence 3 mo after the 3rd operation,and the patient recovered well without neurological dysfunction until the last follow-up in June 2022,which was 22 years following the initial treatment.CONCLUSION It is important for patients with PIMM to receive comprehensive treatment to enable the application of the most appropriate treatment strategies.Long-term survival is not impossible in patients with these malignancies.
文摘Malignant melanoma involving the respiratory tract, which is predominantly found in the skin, is nearly metastatic and true primary tumours are very rare） To date, only 32 cases have been reported in English literature and 22 cases of primary malignant melanoma of the lung have been reported in Chinese literature.
文摘原发性肺恶性黑色素瘤(primary malignant melanoma of lung,PMML)属于罕见肿瘤,约占所有原发性肺部肿瘤的0.01%及所有恶性黑色素瘤的0.4%^([1])。本文介绍了1例PMML伴右侧腋窝淋巴结、颅内多发转移的病例。1病例报告患者男性,59岁,因“体检发现左下肺占位1周”就诊于我院。胸部增强CT(见图1A-B)提示左肺下叶占位,左侧胸膜、右肺、右侧腋窝淋巴结转移可能。
文摘Primary malignant melanoma of the esophagus is a raretumor that accounts for only 0.1％ of primary esophagealneoplasms. Although it was once thought that primarymelanoma could not arise in the esophagus hecause of thelack of precursor cells, it has since been shown inautopsy series that 4％-8％ of individuals havemelanoblasts in the esophageal mucosa.~2 To date,approximately 200 cases of primary esophageal malignantmelanoma have been reported in global literatures whileless than 20 cases of primary esophageal malignantmelanoma have been reported in China.2-4In this reportwe present a case of primary malignant melanoma of theesophagus in a Chinese man.
