Heterochronous multiple primary prostate cancer and lymphoma:A case report

BACKGROUND Multiple primary malignant tumors(MPMTs)are rare type of cancer,especially when solid tumors are the first and lymphoma is the second primary malignancy.We report a patient with heterochronous MPMTs consisting of prostate cancer and rectal diffuse large B-cell lymphoma(DLBCL).CASE SUMMARY We report a 77-year-old male patient diagnosed with prostate cancer who was treated with radiation therapy and one year of endocrine therapy with bicalutamide(50 mg per day)and an extended-release implant of goserelin(1/28 d).Seven years later,rectal DLBCL with lung metastases was found.CONCLUSION Although rare,the possibility of prostate cancer combined with a double primary cancer of DLBCL can provide a deeper understanding.

Primary lymphoblastic B-cell lymphoma of the stomach:A case report

Primary stomach lymphoblastic B-cell lymphoma (B-LBL) is a rare tumor. We describe a primary stomach B-LBL in a 38 years old female who presented with nonspecific complaints of fatigue and vomiting for 2 mo. Gastrofiberscopy revealed a large gastric ulcer, which was successfully resected. Pathology showed a lymphoblastic cell lymphoma arising from the stomach, and there was no evidence of disease at any extrastomach site. Immunohistochemical staining and gene rearrangement studies supported that the stomach tumor was a clonal B-cell lymphoma. Therefore, the diagnosis of B-LBL was made based on the stomach specimen.

Comprehensive treatment for primary right renal diffuse large B-cell lymphoma with a renal vein tumor thrombus:A case report

BACKGROUND Renal involvement in lymphoma is commonly associated with widespread nodal or extranodal lymphoma.Primary renal diffuse large B-cell lymphoma is an extremely rare extranodal lymphoma,accounting for fewer than 1%of all renal masses.Interestingly,the patient in this study had a renal vein tumor thrombus that was observed after laparoscopic radical nephrectomy.CASE SUMMARY We report the case of a 56-year-old female patient with primary renal lymphoma and a renal vein tumor thrombus whose first symptom was right pain in the back and gross hematuria.Histopathology revealed primary renal diffuse large B-cell lymphoma.The patient received 8 standard cycles of rituximab with cyclophosphamide,doxorubicin,vincristine,and prednisone chemotherapy after surgery,and no obvious signs of recurrence were observed during the one-year follow-up.CONCLUSION We evaluated comprehensive treatment of primary renal diffuse large B-cell lymphoma and multidisciplinary management of this malignancy.

Helicobacter pylori eradication treatment for primary gastric diffuse large B-cell lymphoma:A single-center analysis

BACKGROUND Unlike the already established effect of Helicobacter pylori(H.pylori)eradication on gastric mucosa-associated lymphoid tissue(MALT)lymphoma,its therapeutic effect on primary gastric diffuse large B-cell lymphoma(DLBCL)is still unclear.AIM To clarify the efficacy of H.pylori eradication treatment for primary gastric DLBCL.METHODS We reported on 3 new cases,and added them to 3 previously reported cases.We analyzed the usefulness of H.pylori eradication treatment for gastric DLBCL for a total of 6 cases at our center.RESULTS Of the 6 patients(27-90 years old,3 males and 3 females),all 3 patients with single lesions(one transformed from MALT lymphoma)achieved complete remission(CR)after H.pylori eradication.Regarding the 2 newly reported cases,CR was maintained for more than 6 years with eradication treatment alone.In contrast,none of the 3 patients with 2 lesions achieved CR.In 1 newly reported case,endoscopic CR was achieved in one lesion,while stable disease was obtained in the other lesion.Two patients with progressive disease responded to standard chemo therapy±radiation and remained in CR for more than 6 years.CONCLUSION We believe it is worthwhile to attempt H.pylori eradication for elderly patients with primary gastric DLBCL in a single lesion with a small tumor burden.

Comparative analysis of conventional ultrasound and shear wave elastography features in primary breast diffuse large B-cell lymphoma

BACKGROUND Primary breast diffuse large B-cell lymphoma(PB-DLBCL)is a rare subtype of non-Hodgkin lymphoma that accounts for<3%of extranodal lymphomas and 1%of breast tumors.Its diagnosis and management are challenging because of its rarity,heterogeneity,and aggressive behavior.Conventional ultrasound(US)is the first-line imaging modality for breast lesions;however,it has limited specificity and accuracy for PB-DLBCL.Shear wave elastography(SWE)is a novel US technique that measures tissue stiffness and may reflect the histological characteristics and biological behavior of breast lesions.AIM To compare the conventional US and SWE features of PB-DLBCL and evaluate their diagnostic performance and prognostic value.METHODS We retrospectively reviewed the clinical data and US images of 32 patients with pathologically confirmed PB-DLBCL who underwent conventional US and SWE before treatment.We analyzed conventional US features(shape,margin,orientation,echo,posterior acoustic features,calcification,and vascularity)and SWE features(mean elasticity value,standard deviation,minimum elasticity value,maximum elasticity value,and lesion-to-fat ratio)of the PB-DLBCL lesions.Using receiver operating characteristic curve analysis,we determined the optimal cutoff values and diagnostic performance of conventional US and SWE features.We also performed a survival analysis to assess the prognostic value of conventional US and SWE features.RESULTS The results showed that the PB-DLBCL lesions were mostly irregular in shape(84.4%),microlobulated or spiculated in margins(75%),parallel in orientation(65.6%),hypoechoic in echo(87.5%),and had posterior acoustic enhancement(65.6%).Calcification was rare(6.3%)and vascularity was variable(31.3%avascular,37.5%hypovascular,and 31.3%hypervascular).The mean elasticity value of PB-DLBCL lesions was significantly higher than that of benign breast lesions(113.4±46.9 kPa vs 27.8±16.4 kPa,P<0.001).The optimal cutoff value of the mean elasticity for distinguishing PB-DLBCL from benign breast lesions was 54.5 kPa,with a sensitivity of 93.8%,specificity of 92.9%,positive predictive value of 93.8%,negative predictive value of 92.9%,and accuracy of 93.3%.The mean elasticity value was also significantly correlated with Ki-67 expression level(r=0.612,P<0.001),which is a marker of tumor proliferation and aggressiveness.Survival analysis showed that patients with higher mean elasticity values(>54.5 kPa)had worse overall survival(OS)and progression-free survival(PFS)than those with lower mean elasticity values(<54.5 kPa)(P=0.038 for OS and P=0.027 for PFS).CONCLUSION Conventional US and SWE provide useful information for diagnosing and forecasting PB-DLBCL.SWE excels in distinguishing PB-DLBCL from benign breast lesions,reflects tumor proliferation and aggressiveness,and improves disease management.

Effect of rituximab combined with CVAD regimen on serum VEGF and β2-MG levels in patients with primary gastrointestinal B-cell lymphoma

Objective:To investigate the clinical effect of rituximab combined with CVAD regimen in patients with primary gastrointestinal B-cell lymphoma and serum vascular endothelial growth factor (VEGF) andβ2 microglobulin (β2-MG) The impact of the level.Methods:Eighty-four patients with primary gastrointestinal B-cell lymphoma treated from May 2014 to December 2015 were enrolled. Based on the random number table, all the patients were divided into a control group (n=42) and an observation group (n=42). The control group was treated with CVAD. The observation group was treated with rituximab on the basis of the control group. The effect of the patients was evaluated after 3 courses of treatment. The patients were followed up for 3 years after treatment. US RECIST 1.1 was used to evaluate the short-term efficacy on the patients;VEGF, TNF receptor-associated factor 6 (TRAF6) and B-cell lymphoma factor-6 (Bcl-6) levels were measured by enzyme-linked immunosorbent assay;β2-MG level test was implemented to compare the short-term efficacy, biochemical indicators, incidence of toxic side effects and long-term survival rate of the two groups. Results: The short-term efficacy rate of the observation group was 76.19%, which was higher than that of the control group (50.00%) (P<0.05). The levels of VEGF, TRAF6, Bcl-6, andβ2-MG were lower in the observation group after 3 courses of treatment than that in the control group (P<0.05);there was no significant difference in the incidence of neutropenia, gastrointestinal reactions, sepsis, infection, infusion-related reactions and cardiovascular events between the observation group and the control group (P>0.05);The 1-year long-term survival rate after treatment was not statistically significant (P>0.05). The long-term survival rate of the observation group was higher than that of the control group at 2 and 3 years after treatment (P<0.05).Conclusion: The combination of rituximab and CVAD in patients with primary gastrointestinal B-cell lymphoma can improve short-term efficacy, lower VEGF andβ2-MG levels, and lower incidence of side effects. It can improve the long-term survival rate of patients and is worthy of promotion and application.

Pancreatic T/histiocyte-rich large B-cell lymphoma: A case report and review of literature

Primary pancreatic lymphoma(PPL)is an extremely rare form of extranodal malignant lymphoma.The most common histological subtype of PPL is diffuse large B cell lymphoma(DLBCL).In rare cases,PPL can also present as follicular lymphoma,small lymphocytic lymphoma,and T cell lymphoma either of non-Hodgkin’s lymphoma or of Hodgkin’s lymphoma.T-cell/histiocyterich large B-cell lymphoma(T/HRBCL)is an uncommon morphologic variant of DLBCL with aggressive clinical course,it is predominantly a nodal disease,but extranodal sites such as bone marrow,liver,and spleen can be involved.Pancreatic involvement of T/HRBCL was not presented before.Herein,we report a 48-year-old male who was hospitalized with complaints of jaundice,dark brown urine,pale stools,and nausea.The radiological evaluation revealed a pancreatic head mass and,following operative biopsy,the tumor was diagnosed as T/HRBCL.The patient achieved remission after six cycles of CHOP chemotherapy.Therefore,T/HRBCL can be treated similarly to the stage-matched DLBCL and both of them get equivalent outcomes after chemotherapy.

Primary gastric non-Hodgkin lymphomas:Recent advances regarding disease pathogenesis and treatment

Primary gastric lymphomas(PGLs)are distinct lymphoproliferative neoplasms described as heterogeneous entities clinically and molecularly.Their main histological types are diffuse large B-cell lymphoma(DLBCL)or mucosaassociated lymphoma tissue.PGL has been one of the main fields of clinical research of our group in recent years.Although gastric DLBCLs are frequent,sufficient data to guide optimal care are scarce.Until today,a multidisciplinary approach has been applied,including chemotherapy,surgery,radiotherapy or a combination of these treatments.In this minireview article,we provide an overview of the clinical manifestations,diagnosis and staging of these diseases,along with their molecular pathogenesis and the most important related clinical published series.We then discuss the scientific gaps,perils and pitfalls that exist regarding the aforementioned studies,in parallel with the unmet need for future research and comment on the proper methodology for such retrospective studies.Aiming to fill this gap,we retrospectively evaluated the trends in clinical presentation,management and outcome among 165 patients with DLBCL PGL who were seen in our institutions in 1980-2014.The study cohort was divided into two subgroups,comparing the main 2 therapeutic options[cyclophosphamide doxorubicin vincristine prednisone(CHOP)vs rituximab-CHOP(R-CHOP)].A better outcome with immunochemotherapy(R-CHOP)was observed.In the next 2 mo,we will present the update of our study with the same basic conclusion.

Progressively Enlarging Goiter:Case Reports of Primary Thyroid Lymphoma and Literature Review

Primary thyroid lymphoma(PTL)is an exceptionally rare and highly aggressive potentially curable malignant disease.We report three typical cases of PTL referred to our hospital.All three cases had long history of Hashimoto’s thyroiditis,and presented with progressively enlarging neck mass.The first two cases were confirmed by surgical biopsy to be diffuse large B cell lymphoma,and received radiotherapy combined with chemotherapy,or received only chemotherapy.The third case was confirmed by core needle biopsy to be mucosa-associated lymphoid tissue lymphoma,and received radiotherapy.In summary,confirmation of PTL diagnosis is essential for further clinical decisions.Core biopsy should be one of the most important methods to make the diagnosis of PTL,while the use of fine needle aspiration cytology alone is still limited in diagnosing PTL.

Individualized Treatment and Palliative Care for A90-Year-Old Patient with Primary Gastric Diffuse Large-B Cell Lymphoma:4 Year Follow-up and Inspiration

A 90-year-old man was diagnosed with primary gastric diffuse large B-cell lymphoma(PGDLBL)by PET/CT examination,gastroscopy,biopsy and histopathological analysis at a regular physical check in April,2016.The patient received R-CO chemotherapy(rituximab,cyclophosphamide,and vincristine)and radiotherapy subsequently,with enteral nutritional treatment through 3-cavity nasogastric tube due to development of pyloric obstruction.To satisfy patient's strong desire of eating by himself,we performed surgery of exploratory laparotomy and Roux-en-Y gastric bypass(RGB)to relieve pylorus obstruction.Postoperatively,the patient resumed oral feeding,supplemented by nasogastric tube feeding at 1350-1550 Kcal daily.He is now 94 years old with fairly well nutrition and normal communication.The outcome of 4 year follow-up suggests that nutritional treatment and palliative medicine are important for improving prognosis and life-quality of very elderly patients with end-stage tumors apart from the effective chemotherapy,radiotherapy,and surgery.

Primary colonic lymphoma:An incidental finding in a patient with a gallstone attack

We report a case of primary colonic lymphoma incidentally diagnosed in a patient presenting a gallbladder attack making particular attention on the diagnostic findings at ultrasound(US) and total body computed tomography(CT) exams that allowed us to make the correct final diagnosis.A 85-year-old Caucasian male patient was referred to our department due to acute pain at the upper right quadrant,spreaded to the right shoulder blade.Patient had nausea and mild fever and Murphy's maneuver was positive.At physical examination a large bulky mass was found in the right flank.Patient underwent to US exam that detected a big stone in the lumen of the gallbladder and in correspon-dence of the palpable mass,an extended concentric thickening of the colic wall.CT scan was performed and confirmed a widespread and concentric thickening of the wall of the ascending colon and cecum.In addition,revealed signs of microperforation of the colic wall.Numerous large lymphadenopathies were found in the abdominal,pelvic and thoracic cavity and there was a condition of splenomegaly,with some ischemic outcomes in the context of the spleen.No metastasis in the parenchimatous organs were found.These imaging findings suggest us the diagnosis of lymphoma.Patient underwent to surgery,and right hemicolectomy and cholecystectomy was performed.Histological examination confirmed our diagnosis,revealing a diffuse large B-cell lymphoma.The patient underwent to Cyclophosphamide,Hydroxydaunorubicin,Oncovin,Prednisone chemotherapy showing only a partial regression of the lymphadenopathies,being in advanced stage at the time of diagnosis.

Primary central nervous system lymphoma presenting as a single choroidal lesion mimicking metastasis:A case report

BACKGROUND Primary choroidal lymphoma is usually an indolent B-cell lymphoma and rarely progresses to extraocular sites.Herein,we report a case of primary choroidal lymphoma diagnosed as diffuse large B-cell lymphoma(DLBL),which progressed to the brain parenchyma after 4 mo.CASE SUMMARY A 78-year-old man presented with diminution of vision in his right eye.A choroidal lesion suspected of metastatic lesion was observed in the right eye by ophthalmologic examination.To discover the primary tumor,imaging investigations were performed but no malignant lesion was detected.After 4 mo,the patient returned to the clinic presenting with neurological symptoms.Brain magnetic resonance imaging revealed an abnormal contrast-enhancing mass in the left cerebellum.A stereotactic biopsy was performed,and DLBL was confirmed.The patient received the high dose methotrexate-based chemotherapy and he achieved complete remission.CONCLUSION Primary choroidal lymphoma is usually known to have a benign clinical course without systemic involvement.We present a rare case of primary choroidal lymphoma diagnosed as DLBL that progressed to the brain parenchyma within months.

Disseminated soft tissue diffuse large B-cell lymphoma involving multiple abdominal wall muscles:A case report

BACKGROUND Diffuse large B-cell lymphoma(DLBCL)is the most common subtype of non�Hodgkin lymphoma,and patients with DLBCL typically present rapidly growing masses.Lymphoma involving muscle is rare and accounts for only 5%;furthermore,multiple muscles and soft tissue involvement of DLBCL is unusual.Due to unusual clinical manifestation,accurate diagnosis could be delayed.CASE SUMMARY A 61-year-old man complained of swelling,pain and erythematous changes in the lower abdomen.Initially,soft tissue infection was suspected,however,skin lesion did not respond to antibiotics.18Fluoro-2-deoxy-D-glucose(18F-FDG)positron emission tomography-computed tomography demonstrated FDG uptake not only in the skin and subcutaneous tissue of the abdomen but also in the abdominal wall muscles,peritoneum,perineum,penis and testis.DLBCL was confirmed by biopsy of the abdominal wall muscle and subcutaneous tissue.After intensive treatment including chemotherapy with rituximab,cyclophosphamide,doxorubicin,vincristine and prednisolone,central nervous system prophylaxis(intrathecal injection of methotrexate,cytarabine and hydrocortisone)and orchiectomy,he underwent peripheral blood stem cell mobilization for an autologous hematopoietic stem cell transplantation.Despite intensive treatment,the disease progressed rapidly and the patient showed poor outcome(overall survival,9 mo;disease free survival,3 mo).CONCLUSION The first clinical manifestation of soft tissue DLBCL involving multiple muscles was similar to the infection of the soft tissue.

Pathology Verified Concomitant Papillary Thyroid Carcinoma in the Sonographically Suspected Thyroid Lymphoma:A Case Report

PAPILLARY thyroid carcinoma （PTC） is the most common thyroid cancer and consists of nearly 80% of all cases of thyroid cancer.1 It is asso- ciated with the lowest level of malignancy and an excellent prognosis. Primary thyroid lymphoma （PTL） is a lymphomatous process which develops in the thyroid without involvement of primary lymphoid organs or distant metastases at diagnosis.2 It is a rare malignancy that accounts for 1%-5% of all thyroid malignancies and less than 2% of all extranodal lymphomas. The incidence of PTL is one or two cases per million.2＇ 3 It occurs frequently in elder woman, with a peak incidence in the sixth decade of life.

56例伴纵隔大包块淋巴瘤患者的临床特征及预后分析

目的:分析伴纵隔大包块淋巴瘤患者的发病情况、临床表现、治疗效果及预后。方法:回顾性分析2007年2月至2018年1月诊治的56例初诊伴有纵隔大包块患者的临床资料,包括临床特征、分型、分期、疗效及预后。结果:56例患者中,男性25例(45%),女性31例(55%),中位年龄31(17-72)岁。其中≤40岁患者48例(86%)。按病理分型,其中弥漫大B细胞淋巴瘤非特指型(DLBCL-NOS)9例(16.1%),原发纵隔大B细胞淋巴瘤(PMBCL)26例(46.4%),经典型霍奇金淋巴瘤(c HL)17例(30.4%),纵隔灰区淋巴瘤(MGZL)4例(7.1%)。所有患者均采用化疗或化学免疫治疗,中位随访时间54.5(11-149)个月。c HL组中联合受累野放疗(IFRT)10例,完全缓解(CR)10例(58.8%),部分缓解(PR)2例(11.8%),疾病进展(PD)5例(29.4%),治疗过程中有6例患者出现复发/难治而接受自体造血干细胞移植(auto-HSCT)。c HL组1年总生存率(OS)为94.1%,2年OS率为88.2%,5年OS率为67.2%。MGZL组中,联合IFRT 3例,auto-HSCT 1例,CR 2例(50%),PD 2例(50%)。MGZL组1年及2年OS率均为66.7%,5年OS率33.3%。PMBCL组中,联合IFRT 8例,auto-HSCT 7例,CR 22例(84.0%),PR 2例(8.0%),疾病稳定(SD)1例(4.0%),PD 1例(4.0%)。PMBCL组1年及2年OS率均为100%,5年OS率为95.7%。DLBCL-NOS组中,联合IFRT 3例,auto-HSCT 2例,CR 4例(44.5%),PR 2例(22.2%),疾病稳定(SD)1例(11.1%),PD 2例(22.2%)。DLBCL-NOS组1年OS率100%,2年及5年OS率均为77.8%。4组间OS率存在显著性差异(P<0.05),组间比较,PMBCL组生存期显著长于MGZL组(P<0.01)及c HL组(P<0.05),与DLBCL-NOS无显著性差异(P>0.05)。结论:纵隔肿物因其解剖部位独特,常表现为独特的临床特征。c HL、MGZL、PMBCL、DLBCL-NOS等几种原发或伴发纵隔大包块的B细胞起源的淋巴瘤,好发于年轻患者,其临床表现类似,但治疗效果差异显著。在现有治疗条件下,PMBCL的预后优于MGZL及c HL。

放化疗治疗原发纵隔大B细胞淋巴瘤的临床效果

目的:探讨放化疗综合方案治疗原发纵隔大B细胞淋巴瘤(PMBCL)的临床效果。方法:回顾性分析34例行放化疗综合治疗(放化疗组)和28例仅行化疗治疗(对照组)的PMBCL患者的临床疗效、毒副反应以及远期生存情况。结果:放化疗组患者总有效率(OR)显著高于对照组,差异具有统计学意义(P<0.05);放化疗组患者血液毒性反应、黏膜炎及放射性皮炎发生率均显著高于对照组,差异具有统计学意义(P<0.05);放化疗组患者治疗后1年无进展生存率(PFS)显著高于对照组,治疗后3年局部控制率(LC)、PFS均显著高于对照组,治疗后5年LC、OS、PFS均显著高于对照组,差异具有统计学意义(P<0.05)。结论:放化疗综合方案治疗PMBCL疗效显著,远期无进展生存率高,可作为治疗PMBCL的优选方案,但需要注意放化疗并发症的预防。

原发纵隔大B细胞淋巴瘤患者临床特征分析

目的研究分析62例原发纵隔大B细胞淋巴瘤患者的临床特征。方法选取本院2013年1月至2014年3月收治的原发纵隔大B细胞淋巴瘤患者62例为研究对象,整理分析所有入选患者的临床资料、临床表现及病理特征,并进行随访,全面分析患者病情变化情况。结果影响患者预后的不良因素有:患有上腔静脉综合征、未行放射治疗或未行靶向治疗、机体乳酸脱氢酶水平相对较高。治疗方式的不同亦影响患者的预后。62例患者经相应治疗后,完全缓解9例,部分缓解48例,无效5例。结论原发纵隔大B细胞淋巴瘤多发于男性,影像学表现以出现纵隔肿块且压迫周围组织器官为主。采用放射治疗+利妥昔单抗+CHOP方案治疗原发纵隔大B细胞淋巴瘤具有较明显的效果。

原发性纵隔大B细胞淋巴瘤临床病理分析并文献复习

目的：探讨原发性纵隔大B细胞淋巴瘤（primary mediastinal large B-cell lymphoma，PMBL）的临床病理学特点及诊断要点。方法：收集2010年9月~2014年12月病理确诊为PMBL的病例，对其对PMBL进行临床特点、病理形态学及免疫组织化学观察分析，并复习相关文献。结果：3例PMBL2例为男性，1例为女性，3例均侵犯邻近器官，2例伴颈部或锁骨上淋巴结受累，1例椎体受累（C7-T4）。镜下见不同程度的纤维化，瘤细胞呈巢状或弥漫浸润，瘤细胞胞质空亮丰富，细胞核圆形或卵圆形，其中1例可见坏死。免疫组织化学均表达CD20、CD79a、CD23、bcl2、CD23，其中2例表达CD30，均不表达CD3、CD5。随访3例均生存，化疗后1例获得CR，2例获得PR。结论：纵隔原发弥漫大B细胞淋巴瘤很少见，形态变化多端，容易引起误诊。提高对PMBL的认识，对避免误诊是至关重要的。

16例原发纵膈大B细胞淋巴瘤患者临床特征及预后分析

目的回顾性分析16例原发纵膈大B细胞淋巴瘤(PMBCL)患者的临床特征、疗效评估、疾病进展的危险因素及其生存预后。方法回顾性分析中国科学技术大学附属第一医院(安徽省立医院)自2015年3月~2022年2月收治的16例PMBCL患者的临床资料,分析患者的临床特征及预后特点,并对相关数据进行统计分析。结果16例PMBCL患者的中位总生存(OS)时间未达到,5年OS率为92.3%。中位无进展生存(PFS)时间为7(95%CI 6.5~15.5)个月,5年PFS为43.3%。至随访截止日期,16例患者中,1例失访,中位随访时间25(95%CI 4~70)个月,14例(93.3%)生存,其中8例持续完全缓解(CR),5例部分缓解(PR),总缓解率(ORR)为86.67%。4例难治复发患者,使用PD-1抑制剂ORR达75%。单因素预后分析表明Ann Arbor分期、B组症状、LDH水平、是否巨型包块、aa-IPI评分、PET-CT病灶SUV-max、Mum-1是否阳性、不同Ki-67水平均不是引起PMBCL疾病进展的危险因素。结论PMBCL患者初始治疗使用含有利妥昔单抗的化疗方案,可改善患者总生存,但PFS改善不佳,需要新的方案以期待达到治愈的目的。复发难治PMBCL可考虑使用以PD-1单抗为基础的治疗方案。

胸腺淋巴瘤18F-FDG PET/CT代谢参数与临床分期及病理分型的相关性研究

背景18F-FDG PET/CT利用图像融合技术,可显示功能代谢异常及结构的改变,但其在胸腺淋巴瘤鉴别诊断、分期和分型中的作用研究仍相对较少。目的探讨胸腺淋巴瘤的18F-FDG PET/CT代谢参数与其病理分型及临床分期的关系。方法选取2015年1月-2022年5月于解放军总医院一中心核医学科行PET/CT检查和病理学证实为胸腺淋巴瘤的患者,记录胸腺淋巴瘤病灶最大标准摄取值(maximum standard uptake value,SUVmax)、平均标准摄取值(mean standard uptake value,SUVmean)、代谢体积(metabolic tumor volume,MTV)、病灶糖酵解总量(total lesion glycolysis,TLG)和肿瘤-正常肝组织标准摄取值比值(tumor-to-normal liver standard uptake value ratio,SUVR)。以淋巴结和结外器官受累结果进行Ann Arbor分期,并根据主要病理类型进行分组。对18F-FDG PET/CT代谢参数与临床病理分型、分期的相关性进行分析。结果共计85例患者纳入研究,男性46例、女性39例,年龄(30.34±14.48)岁。其中原发性纵隔大B细胞淋巴瘤(primary mediastinal large B-cell lymphoma,PMBCL)35例,结节硬化型霍奇金淋巴瘤(nodular sclerosis Hodgkin lymphoma,NSHL)29例,T淋巴母细胞淋巴瘤(T-cell lymphoblastic lymphoma,T-LBL)19例。Ann Arbor分期:Ⅰ期2例,Ⅱ期29例,Ⅲ期10例,Ⅳ期44例。PMBCL、NSHL、T-LBL三组间各项代谢参数的差异均有统计学意义(P<0.05)。不同Ann Arbor分期间各代谢参数差异均有统计学意义(P<0.05)。胸腺淋巴瘤Ann Arbor分期与各项代谢参数均呈正相关(TLG:rs=0.494,P<0.01;MTV:rs=0.469,P<0.01;SUVR:rs=0.378,P<0.01;SUVmax:rs=0.296,P=0.006;SUVmean:rs=0.273,P=0.012)。结论不同病理类型胸腺淋巴瘤的18F-FDG PET/CT代谢参数存在一定差异,代谢参数TLG、MTV、SUVR与胸腺淋巴瘤Ann Arbor分期中度相关,可为临床制定治疗计划提供参考。