[Tumoral extension by inversion of the lymphatic flow in colonic cancer].

In a patient with an adenocarcinoma of the ascending colon, the jejunal central villous lymphatics were dilated and contained tumour cells. This case, apparently the only one of its type, demonstrates the proof of a phenomenon sometimes described in connection with malignant diseases, but rarely proven; that of the dissemination of tumour cells by reversal of lymphatic flow.