Objective: To investigate the 30 bp deletion in LMP-1 in lymphoepithelial carcinoma of salivary glands, and to clarify the deletion rate. Methods: 46 cases of LEC were subjected to PCR examination for the 3?terminal r...Objective: To investigate the 30 bp deletion in LMP-1 in lymphoepithelial carcinoma of salivary glands, and to clarify the deletion rate. Methods: 46 cases of LEC were subjected to PCR examination for the 3?terminal region of LMP-1 gene, in order to observe the 30 bp deletion. To reduce the influence of unsuccessful DNA extraction from paraffin-embedded tissue sections, a bactin PCR was performed at the same time. Additionally, DNA sequencing was performed on 1 case without deletion and 1 case with deletion. Results: 4 of 46 specimens were proved to contain no suitable DNA sample by bactin gene amplification. In the remaining 42 cases, LMP-1 DNA was detected in 35/42 (83.3%) LEC cases. Two kinds of PCR products were found in these 35 cases after further DNA sequencing. 31 cases (88.6%) carried 316 bp product and 4 cases (11.4%) carried 286 bp product. Conclusion: Some LECs of salivary glands carry del-LMP-1. In our study, the deletion rate was 11.4% (4/35).展开更多
目的探讨Pan-TRK免疫组化在涎腺分泌性癌(secretory carcinoma of salivary glands,SCSG)诊断及鉴别诊断中的价值。方法收集14例SCSG临床资料,采用免疫组化、FISH对SCSG进行检测。另选取经典的腺泡细胞癌、黏液表皮样癌、腺样囊性癌各1...目的探讨Pan-TRK免疫组化在涎腺分泌性癌(secretory carcinoma of salivary glands,SCSG)诊断及鉴别诊断中的价值。方法收集14例SCSG临床资料,采用免疫组化、FISH对SCSG进行检测。另选取经典的腺泡细胞癌、黏液表皮样癌、腺样囊性癌各10例作为对照。结果14例SCSG患者男女比为4∶3,年龄15~79岁,10例发生于腮腺,2例发生于颊部,1例发生于腭部,1例发生于颈部;11例生存状态良好,1例复发生存,2例失访。14例SCSG,多呈浸润性生长,呈微囊状、乳头-囊状、管状、实性排列或几者混合,腔内伴丰富分泌物,1例见神经侵犯,1例伴淋巴结转移。免疫表型:14例SCSG中CK7、S-100、Mammaglobin均阳性,11例SOX-10阳性,10例GATA-3阳性,14例DOG1均阴性,Ki-67增殖指数为1%~15%。FISH检测:12例SCSG成功检测到FISH信号,10例发现ETV6-NTRK3基因融合阳性。14例SCSG均行Pan-TRK免疫组化检测,10例细胞核阳性,1例细胞质阳性。10例腺泡细胞癌、10例黏液表皮样癌、10例腺样囊性癌中分别有2、4、7例Pan-TRK阳性,定位于细胞膜/细胞质。结论Pan-TRK免疫组化阳性可提示伴ETV6-NTRK3融合的SCSG,尤其以细胞核着色模式为阳性标准时,在SCSG诊断及鉴别诊断中表现为较高的敏感性和高度特异性,并对未来TRK基因靶向治疗提供依据。展开更多
To investigate the biological behavior and proper management of myoepithelial carcinomas of salivary glands Methods Twenty seven cases of myoepithelial carcinoma of salivary glands were retrospectively studied and...To investigate the biological behavior and proper management of myoepithelial carcinomas of salivary glands Methods Twenty seven cases of myoepithelial carcinoma of salivary glands were retrospectively studied and their detailed clinical and follow up data were presented Results The subjects consisted of 17 men and 10 women aged 16 to 73 years (mean age: 51 years) The parotid gland was the most common site (n=14) of cancer Clinical features included extensive local growth, invasion of the surrounding tissues, infrequent cervical lymph node metastasis but high rates of distant metastasis, frequent/multiple recurrences and poor prognosis Conclusions Myoepithelial carcinomas of the salivary gland should be classified as high grade malignancies Early and radical surgery with close follow up are essential for achieving favorable outcomes Radiotherapy appears to be non sensitive and elective neck dissection is generally unnecessary展开更多
Salivary gland tumors are a group of the most common tumors in the oral and maxillofacial region. They have features with complicated histopathologic classification and wide distribution. There is little knowledge on ...Salivary gland tumors are a group of the most common tumors in the oral and maxillofacial region. They have features with complicated histopathologic classification and wide distribution. There is little knowledge on the clinicopathologic characterics and clinical behaviors of salivary gland tumors of various locations and subtype. The management of salivary gland tumors is also contraversial. Biopsy is not suggested because of seeding of tumor cells. Therefore adjunctive methods are important for preoperative diagnosis. Since 1985, our research group has performed a series of basic and clinical researches on salivary gland tumors including clinicopathologic characteristis and behavior, preoperative adjunctive diagnosis, mechanism, prevention and treatment of distant metastasis of salivary adenoid cystic carcinoma, and histogenesis of salivary gland tumor. These studies have improved our knowledge on the clinical, histopathological, cytological, imaging features, and biobehavior of different types of slivary gland tumors. We have also suggested related principles of management, modified the operative methods of benign tumor of parotid gland. Our efforts have raised the standards of diagnosis and treatment of salivary gland tumors.展开更多
文摘Objective: To investigate the 30 bp deletion in LMP-1 in lymphoepithelial carcinoma of salivary glands, and to clarify the deletion rate. Methods: 46 cases of LEC were subjected to PCR examination for the 3?terminal region of LMP-1 gene, in order to observe the 30 bp deletion. To reduce the influence of unsuccessful DNA extraction from paraffin-embedded tissue sections, a bactin PCR was performed at the same time. Additionally, DNA sequencing was performed on 1 case without deletion and 1 case with deletion. Results: 4 of 46 specimens were proved to contain no suitable DNA sample by bactin gene amplification. In the remaining 42 cases, LMP-1 DNA was detected in 35/42 (83.3%) LEC cases. Two kinds of PCR products were found in these 35 cases after further DNA sequencing. 31 cases (88.6%) carried 316 bp product and 4 cases (11.4%) carried 286 bp product. Conclusion: Some LECs of salivary glands carry del-LMP-1. In our study, the deletion rate was 11.4% (4/35).
文摘目的探讨Pan-TRK免疫组化在涎腺分泌性癌(secretory carcinoma of salivary glands,SCSG)诊断及鉴别诊断中的价值。方法收集14例SCSG临床资料,采用免疫组化、FISH对SCSG进行检测。另选取经典的腺泡细胞癌、黏液表皮样癌、腺样囊性癌各10例作为对照。结果14例SCSG患者男女比为4∶3,年龄15~79岁,10例发生于腮腺,2例发生于颊部,1例发生于腭部,1例发生于颈部;11例生存状态良好,1例复发生存,2例失访。14例SCSG,多呈浸润性生长,呈微囊状、乳头-囊状、管状、实性排列或几者混合,腔内伴丰富分泌物,1例见神经侵犯,1例伴淋巴结转移。免疫表型:14例SCSG中CK7、S-100、Mammaglobin均阳性,11例SOX-10阳性,10例GATA-3阳性,14例DOG1均阴性,Ki-67增殖指数为1%~15%。FISH检测:12例SCSG成功检测到FISH信号,10例发现ETV6-NTRK3基因融合阳性。14例SCSG均行Pan-TRK免疫组化检测,10例细胞核阳性,1例细胞质阳性。10例腺泡细胞癌、10例黏液表皮样癌、10例腺样囊性癌中分别有2、4、7例Pan-TRK阳性,定位于细胞膜/细胞质。结论Pan-TRK免疫组化阳性可提示伴ETV6-NTRK3融合的SCSG,尤其以细胞核着色模式为阳性标准时,在SCSG诊断及鉴别诊断中表现为较高的敏感性和高度特异性,并对未来TRK基因靶向治疗提供依据。
文摘To investigate the biological behavior and proper management of myoepithelial carcinomas of salivary glands Methods Twenty seven cases of myoepithelial carcinoma of salivary glands were retrospectively studied and their detailed clinical and follow up data were presented Results The subjects consisted of 17 men and 10 women aged 16 to 73 years (mean age: 51 years) The parotid gland was the most common site (n=14) of cancer Clinical features included extensive local growth, invasion of the surrounding tissues, infrequent cervical lymph node metastasis but high rates of distant metastasis, frequent/multiple recurrences and poor prognosis Conclusions Myoepithelial carcinomas of the salivary gland should be classified as high grade malignancies Early and radical surgery with close follow up are essential for achieving favorable outcomes Radiotherapy appears to be non sensitive and elective neck dissection is generally unnecessary
文摘Salivary gland tumors are a group of the most common tumors in the oral and maxillofacial region. They have features with complicated histopathologic classification and wide distribution. There is little knowledge on the clinicopathologic characterics and clinical behaviors of salivary gland tumors of various locations and subtype. The management of salivary gland tumors is also contraversial. Biopsy is not suggested because of seeding of tumor cells. Therefore adjunctive methods are important for preoperative diagnosis. Since 1985, our research group has performed a series of basic and clinical researches on salivary gland tumors including clinicopathologic characteristis and behavior, preoperative adjunctive diagnosis, mechanism, prevention and treatment of distant metastasis of salivary adenoid cystic carcinoma, and histogenesis of salivary gland tumor. These studies have improved our knowledge on the clinical, histopathological, cytological, imaging features, and biobehavior of different types of slivary gland tumors. We have also suggested related principles of management, modified the operative methods of benign tumor of parotid gland. Our efforts have raised the standards of diagnosis and treatment of salivary gland tumors.
