[Expression of CA 19-9 in tubular and tubulovillous adenomas of the descending and sigmoid colon and the rectum with respect to morphologic differentiation characteristics and the adenoma-carcinoma sequence].

Expression of CA19-9 was studied in 29 adenomas and 6 adenocarcinomas of the distal colon in rectum. The authors did not find an unequivocal correlation between expression of CA19-9 and the morphological differentiation. Expression of CA19-9 was recorded twice in epithelia of normal mucosa.