胃原发性恶性淋巴瘤临床病理、免疫组化及超微结构研究

目的　探讨胃原发性恶性淋巴瘤的临床病理特点。方法　对 3 2例胃原发性非霍奇金恶性淋巴瘤的临床病理、免疫组化及超微结构进行观察。结果　 3 2例恶性淋巴瘤原发于胃底 3例 ,胃体 7例 ,胃角 8例 ,胃窦14例。全部病例做免疫组化染色 ,证实B细胞性淋巴瘤 3 1例 (96 9% ) ,T细胞性淋巴瘤 1例 (3 1% )。另外 ,对11例非霍奇金恶性淋巴瘤和 6例胃未分化癌进行了对比电镜观察 ,发现二者的超微结构有明显的差异。结论　绝大多数胃原发性恶性淋巴瘤为B细胞来源 ;免疫组化和超微结构观察对本病的诊断和鉴别诊断具有十分重要的意义。

The pathological,immunohistochemical and ultrastructural features in primary gastric malignant lymphoma

Objective To investigate the clinicopathological features of primary gastric malignant lymphoma.Methods 32 cases of primary gastric non Hodgkin's malignant lymphoma(NHL)were studied by clinicopathology,immunohistochemistry and ultrastructure.Results 3 cases of NHL arose from fundus of stomach,7 cases from body of stomach,8 cases from gastric angle,and 14 cases from gastric antrum.The paraffin sections of all cases were stained.There were 31 cases(96\^9%)exhibiting B cell phenotype,only 1 case(3\^1%)exhibiting T cell phenotype.11 cases of NHL and 6 cases of undifferentiated carcinoma(UC)in stomach were observed comparatively under electron microscope(EM).The ultrastructural characteristics of NHL were much different from those of UC.Conclusion Most primary gastric malignant lymphoma are B cell lymphomas.Immunohistochemistry and ultrastuctural observation are much helpful in the diagnosis and differential diagnosis between NHL and UC.