The authors report four new cases of primary digestive carcinoma other than hepatoma with alpha 1 feto-protein in the serum (greater than 200 ng/ml). Two were carcinoma of the colon without liver metastases. The remaining two were also colonic carcinoma but with liver metastases. In the first cases, alpha 1 feto-protein disappear after surgical procedure. In spite of the rareness of primary digestive carcinoma with presence of alpha 1 feto-protein noted until now, these cases require reconsideration of the idea that AFP is specific for hepatoma.
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