A case of locally advanced adenosquamous carcinoma of the cecum with long-term survival

• Main Authors: Hiroshi Matsuoka, Mitsuru Nakagawa, Tsunekazu Hanai, Koji Masumori, Yoshikazu Koide, Hidetoshi Katsuno, Tomoyoshi Endo, Masahiro Mizuno, Yongchol Chong, Koutarou Maeda, Testuya Tsukamoto, Ichiro Uyama
• Format: Article
• Language: English
• Published: Fujita Medical Society 2019-11-01
• Series: Fujita Medical Journal
• Subjects: adenosquamous carcinoma; colorectal cancer; long-term survival
• Online Access: https://www.jstage.jst.go.jp/article/fmj/5/4/5_2019-007/_pdf/-char/en

A 63-year-old woman was admitted to our hospital with a right lower abdominal mass and general fatigue. Preoperative examination suggested a large ovarian tumor or cecal carcinoma. However, her intraoperative diagnosis was colon cancer; we therefore performed an ileocecal resection with oophorectomy. The tumor was pathologically diagnosed as adenosquamous carcinoma T4bN1M-stage IIIa. We administrated CapeOX adjuvant chemotherapy for 6 months. Adenosquamous carcinoma is extremely rare, at around 0.1% of all colorectal cancers, and usually has a poor prognosis. The patient is still alive without recurrence after 84 post-operative months, even with later developments of metachronous early colorectal cancer and breast cancer. We herein report a rare case of cecal ASC with good prognosis.