肛門管に扁平上皮内癌と腺腫が並存した粘膜脱症候群の1例 [in Japanese] A Case of Early Squamous Cell Carcinoma (Carcinoma in Situ) Accompanied by an Adenoma and Mucosal Prolapse Syndrome in the Anal Canal [in Japanese]
Access this Article
Search this Article
Reports on carcinoma in situ of squamous cell carcinoma of the anal canal are very rare. We experienced, however, a case with an incidentally discovered carcinoma in situ of squamous cell carcinoma during microscopic examination of anal tissue resected for treatment of a mucosal prolapse. We report it because this is the first case of clinically unsuspected carcinoma in situ in Japan. The patient was a 72-year-old female who had experienced bleeding during defecation for 30 years. Two years before, she experienced anal prolapse and came to our center. At the initial medical examination, a mucosal prolapse was found, and surgery was performed. The dissected mucosal prolapse was submitted for pathologic diagnosis, which found a squamous cell carcinoma, five mm in size, an located very close to the dentate line, and in contact with adenoma and mucosal prolapse.
- Nippon Daicho Komonbyo Gakkai Zasshi
Nippon Daicho Komonbyo Gakkai Zasshi 55(4), 175-178, 2002-04-01
The Japan Society of Coloproctology