Abstract
A case of synchronous primary cancers in a patient who was found having a jejunal cancer during operation for a sigmoid colon cancer is reported. A 56-year-old man received medical checkup and positive occult blood and mild anemia were revealed.
Minute investigation disclosed a sigmoid colon cancer. At operation, another cancer was also found in the jejunum at 10 cm from the Treitz's ligament. The sigmoid colon cancer infiltrated into the pelvic peritoneum and left ureter, therefore, palliative resection of the sigmoid colon was performed. It was a well differentiated tubular adenocarcinoma. The jejunal cancer was of the ulcerating type (3×4 cm), and was a well differentiated papillotubular adenocarcinoma.
