本文报道肛指普查中发现直肠类癌31例的组织分型和形态,比较了各种染色法,提出了腺癌与类癌腺样型的鉴别诊断要点。作者认为,在组织化学方面以铅苏木紫染色法较为简易、稳定、迅速,是目前常规病理外检中区别类癌与腺癌较好的方法。 This article reports the classification and morphology of rectal carcinoid tumors found in 31 cases of rectal census, and compared various staining methods. The main points of differential diagnosis between adenocarcinoma and carcinoid gland type were proposed. The authors believe that in the histochemical lead plum purple staining method is relatively simple, stable and rapid, is the conventional pathological examination in the distinction between carcinoid and adenocarcinoma better method.