Mucinous Carcinoma Probably arising from a Diverticulum

Teijiro Hirashita, Kimihiro Nakashima, Masahiro Sakai and Yoshiyuki Kondo*

Department of Surgery, Sakai Hospital
First Department of Pathology, Oita University School of Medicine*

We report a rare case of primary colon cancer aising from the diverticulum. A 78-year-old woman admitted for nausea, abdominal distention and right lower abdominal pain for one year was found in colonoscopy to have complete circumferential stricture without a gross mucosal tumor in the ascending colon. Biopsy showed no evidence of malignancy. Tumor markers were normal. She underwent a right hemicolectomy, but no mucosal tumor was recognized macroscopically. Histopathological examination showed mucinous carcinoma in the submucosal and proper muscular layers probably arising from the diverticulum.

Key words
colon cancer, mucinous carcinoma, diverticulum

Reprint requests
Teijiro Hirashita First Department of Surgery, Oita University School of Medicine
1-1 Idaigaoka, Hasama-Machi, Yuhu, 879-5593 JAPAN

Accepted
September 26, 2007

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