Abstract
We report a case of T-cell-derived malignant lymphoma of the colon, and discuss this case in relation to the literature. Case A 84-year-old female. Chief complaint: Lower abdominalpain and fever. On the bisis of the barium enema and abdominal CT findings, cancer of the ascending colon was diagnosed. Surgery was performed on October 18, 1991. Operative findings: Right hemicolectomy and lymph node dissection in accordance with D2 colon cancer were performed, including all of the enlarged lymph nodes. Resected specimen: The tumor was 5×5.5cm in size. Histopathologically the tumor cells were positive for UCHL-1 (T-cell marker), but negative for L26 (B-cell marker). It was surmised that the tumor was a malignant lymphoma of T-cell origin. Discussion: Primary malignant lymphoma of the colon is a rare disease. It is thought that almost all malignant lymphomas of the digestive tract are the B-cell origin, and malignancies of the T-cell origin are extremely rare. Prognosis of the T-cell origin is much worse than that of B-cell origin. And this case was died dur to the recurrence of the lymphoma at two years after surgery.
