[A Case of Anal Canal Cancer Treated by Abdominoperineal Resection in a 100-Year-Old Woman].

A 100-year-old woman visited our hospital because of erosion and bleeding in her anal region in January 2014. Computed tomography scans revealed the presence of a tumor in the anal canal, which caused a considerable amount of pain and bleeding over the next 4 months. Accordingly, immediate surgical intervention was considered necessary to provide local control. Therefore, we decided to perform abdominoperitoneal resection after consultation with her family. The operation was successfully completed, and histopathological examination indicated a diagnosis of adenocarcinoma of the anal canal. The postoperative course was almost uneventful, and the patient was discharged on the 23rd post-operative day. There are some cases reported in Japan where laparotomy was performed for patients over 100 years of age, but none of them were treated surgically for anal canal cancer. We suggest that elective surgical intervention can be an effective option for the treatment of abdominal and pelvic malignancies even in patients of an extremely advanced age.