Abstract
This paper presents a case of sigmoid colon cancer with liver metastasis occurred 9 years and 8 months after an operation for the primary legion in which the metastatic foci could be resected radically.
A 50-year-old man was referred to the hospital for evaluation of a solitary occupy legion with the size of 40mm in S3 of the liver at a total medical check up. There was a previous history of undergoing a sigmoidectomy for sigmoid colon cancer at the age of 41 at our hospital. Chest CTscan, abdominal CTscan, gastrointestinal fiber, and colonoscopic fiber revealed no primary malignant neoplasmas, and a hepatectomy of lateral segment of the liver was performed. Microscopically, no residual cancer was recognized at the surgical margin. Histopathological findings of the resected material indicated well differentiated adenocarcinoma compatible with the sigmoid colon cancer. It was considered that the hepatic legion was metastasis of the sigmoid colon cancer treated 9 years and 8 months before admission.
Colorectal cancer can metastasize to distant organs several years after operation like in this case, and consequently long-term and strict follow-up is required after curative resection of the primary legion.
