極めて希なIIb型粘膜内肛門癌の1例

概要

論文の詳細を見る
Carcinoma of the anal canal is often found to be advanced in spite of their presence in a rather superficial area. In this paper, we report a case of IIb type carcinoma in situ of the anal canal. A 76-year-old woman was, admitted complaining of anal bleeding. In her anal canal there was an abnormal lesion with a slightly white, flat surface. By biopsy, it was found to be a squamous cell carcinoma and an interamural metastasis in the neighboring tissue was suspected. Abdominoperineal resection was performed. The resected tissue was examined histologically and it was found that the flat lesion was a carcinoma in situ with malignant cells originating from the intermediate zone and staying within the rnurosa. Morphologically and histologically this case seems to be quite interesting in consideration of the genesis of cancer.<BR>Therapeutically there is no definite guideline for surgical treatment of squamous cell carcinoma of the anal canal, differing from the case of colon cancer, so that we had some difficulties in decoding a therapeutic plan for this carcinoma. Local resection of the anal canal might have been sufficient. Accumulation and study of similar cases are needed to establish the guideline for its treatment.
日本大腸肛門病学会の論文