[Malignant carcinoids of the stomach].

The work is concerned with the study of gastric tumors showing histological similarity with carcinoids, but differing from them by morphological and clinical signs of malignancy. A conclusion is made on the carcinoid nature of the neoplasms under consideration, the following evidences being presented: 1) despite some differences the tumors correspond histologically to classical carcinoids; 2) as in common carcinoids, argyrophil or argentaffine granules may be revealed in tumor cells; 3) the occurrences of tumors is related with a peculiar neoplastic transformation of glandular epithelium of the stomach resembling carcinoid rather than cancerous one. Not excluding the possibiltiy of their origin from common carcinoids, the author believes that they are likely to be primary malignant tumors.