Analysis of Colorectal Cancer Involving Adjacent Organs.

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  • Inoue Y.
    Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University
  • Suzuki M.
    Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University
  • Tezuka T.
    Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University
  • Takasaki K.
    Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University

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  • Ｓｉ（Ａｉ）大腸癌の臨床病理学的検討

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Abstract

One hundred eighty-one patients with colorectal cancer involving adjacent organs (Si, Ai) were studied clinicopathologically. The incidence of Si (Ai) colorectal cancer was 23 % in the cecum, 19 % in the descending colon and, 15 % in the ascednding colon. Sixty-three patients (35 %) were positive for histological invasion of adjacent organs (si, ai). Invasion was predominantly seen in the peritoneum (64 cases) and urinary bladder (39 cases). The incidence of histological invasion was 80 % in the stomach, 60% in the vagina, and 50 % in the colon. The 5-year survival rate in curable A lesions was 72 % and significantly higher than in curable B or C lesions. In patients without liver metastasis, dissemination, and group 4 lymph node metastasis, the 5-year survival rate in patients with no histological invasion to the adjacent organs was 75 %, not significantly different from the rate with si (ai) cancer (69 %), but higher than with histologically positive margins (curable B ; 0 %, curable C ; 0 %). Therefore, it was important to perform aggressive combined resection for histologically negative margins.

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