[Primary clear cell adenocarcinoma of the colon].

Clear cell adenocarcinoma generally develops in the kidney and the female genital organs. In 1964 the first case of primary clear cell adenocarcinoma of the colon was described. Since then less than 20 cases have been reported in the literature. We report a case of a 69-year-old man with a primary clear cell adenocarcinoma of the colon sigmoideum associated with adenoma and metastasis to two of 12 lymph nodes. Immunhistochemistry supported the diagnosis. The patient received adjuvant chemotherapy and 19 months following operation he was alive and had no signs of recurrences.