结直肠原发性腺鳞癌的临床病理观察

目的 探讨结直肠原发性腺鳞癌的临床病理学特征、组织发生、生物学行为和人类乳头状瘤病毒(HPV)在其发病中的作用.方法 应用光镜、免疫组化标记及HPV原位杂交技术对5例发生于结肠的腺鳞癌进行临床组织病理学分析,并复习相关文献.结果 患者男3例,女2例,平均51岁.肿瘤位于结肠肝曲、脾曲、横结肠和乙状结肠距肛门12 cm及14 cm处.主要症状为便血、腹痛、腹泻和消瘦.4例患者分别死于术后12、21、22和33个月,1例术后3个月生存.镜下癌组织有腺癌和鳞癌成分共同组成,可见两种成分的移行.鳞癌细胞表达CK5/6、34βE12和p63,而腺癌细胞均阴性表达.腺癌细胞均表达CDX-2,鳞癌细胞弱阳性或阴性表达,二者均不表达TTF-1.原位杂交显示HPV6/11和HPV16/18均阴性.结论 结直肠原发性腺鳞癌是肠道恶性肿瘤的罕见类型,组织起源尚无定论,临床预后较单纯腺癌差.HPV6/11和HPV16/18感染与结直肠腺鳞癌的发生关系还难以明确.

Clinicopathological features of primary adenosquamous carcinoma in colon and rectum

Purpose To investigate the clinicopathological characteristics,histogenesis,prognosis of primary adenosquamous carcinomas of the colon and rectum,and the roles of human papilloma virus(HPV)in the pathogenesis.Methods Five cases of adenosquamous carcinoma of the colon were reviewed by histology and immunohistochemistry.The detection of HPV6/11 and 16/18 was performed by in situ hybridization.Results Three males and two females were retrieved with an average age of 51 years.The tumor involved hepatic,splenic ...