Abstract
A case of diffusely infiltrating type of primary carcinoma of the sigmoid colon seen in a 47-year-old man was reported.
He complained of a 2 months-history of increasing abdominal pain and small stool in size. Barium enema study showed a narrowing segment involving the sigmoid colon. Colonofiberscopy demonstrated the finding of cobble stone change and endoscopic biopsy revealed poorly differentiated adenocarcinoma. Non-curative colectomy was performed, because of metastasis of para-aortic lymph nodes. Resected specimen showed stenosing lesion of 13 cm in length, with marked thickning of the wall of the sigmoid colon. The mucosal surface was granular with superficial ulceration. On microscopic examination the tumor was basically consistent with the findings of poorly differentiated adenocarcinoma mixed with signet ring cells, and was invaded with marked lymphangiosis carcinomatosa.
Forty eight cases of diffusely infiltating or so-called linitis plastica type of primary carcinoma of the colon and rectum were reported in Japanese literatures and the clinicopa-thological features were reviewed.
