Abstract
本文报道2例胃原发黏液表皮样癌临床病理学及免疫表型特征,并总结相关文献。例1男,61岁,胃镜发现胃体下端近胃角处一溃疡,覆污秽苔。例2男,59岁,胃镜于残胃与肠管交界处发现隆起型肿物。镜下观察:肿瘤由形态温和的中间细胞、表皮样细胞和黏液细胞构成,可见筛状腺腔/微囊结构,其内含黏液或嗜酸性分泌物,且伴有多处神经浸润。免疫组织化学结果显示:表皮样细胞及中间细胞p63和p40阳性,黏液细胞MUC5AC阳性,过碘酸雪夫染色阳性,p53为野生型,Ki-67阳性指数>60%。病理诊断为胃黏液表皮样癌。胃原发黏液表皮样癌罕见,侵袭性高,经验不足的医师对本病的诊断要点往往了解不充分,应注意与腺鳞癌、低分化鳞状细胞癌等鉴别。.
MeSH terms
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Carcinoma, Mucoepidermoid* / diagnosis
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Carcinoma, Mucoepidermoid* / metabolism
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Carcinoma, Mucoepidermoid* / pathology
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Diagnosis, Differential
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Humans
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Ki-67 Antigen / metabolism
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Male
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Middle Aged
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Mucin 5AC* / metabolism
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Stomach Neoplasms* / metabolism
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Stomach Neoplasms* / pathology
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Tumor Suppressor Protein p53 / metabolism
Substances
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Mucin 5AC
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MUC5AC protein, human
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Tumor Suppressor Protein p53
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Ki-67 Antigen