結腸腺扁平上皮癌の2例

概要

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Adenosquamous carcinoma of the colon is a rare disease. We reported two cases o adeno squamous carcinoma of the sigmoid colon. <BR>Case 1 was a 72-year-old male. The carcinoma invated diffusly from sigmoid colon to rectosigmoid colon and abdominoperineal excision of rectum was performed. He died after surgery of multiple organ failure that was induced by upper gastro-intestinal bleeding. <BR>Case 2 was a 55-year-old female. the carcinoma showed Borrmanns type 2 of the sigmoid colon and sigmoidectomy was carried out. She was aliver 2 years 1 month after surgery without any sings of recurrence. <BR>No theory has been established for mechanism of development but we found a histologically transitional figure from adenocarcinoma to squamous cell carcinoma in our cases. These findings may suggest that adenocarcinoma cells can transform squamous cell carcinoma.
日本大腸肛門病学会の論文