肛門周囲膿瘍を契機として発見された肛門管癌の1例

概要

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Anal canal cancer is a rare disease and clinical signs are not specific. Therefore, early diagnosis of anal cancer is difficult and the final diagnosis has often been delayed. We reported here a case of an anal canal cancer detected during the treatment of perineal abscess.<BR>The patient is a 62-year-old man. He had pain and swelling in the perineum. The painful swelling was incised as a perineal abscess. Then, the operation for an anal fistula was performed. The healing of the wound was delayed. One-half year later, an induration was found at the wound. The pathological examination of the biopsied specimen was mucinous carcinoma. The anal cancer was resected by abdominoperineal resection. The mucin-producing anal cancer is often treated as perineal abscess as in the patient repocted here. Therefore, the close attention, i. e. the reported histological diagnosis etc, should be done on patients with perineal abscess or anal fistula refractory to the treatment.