MUC2 and mucinous adenocarcinoma: MUC2 and also, other intestinal secretory mucins [8, 9], have been found in other mucinous adenocarcinomas, such as those of the pancreas [22], salivary glands [23], biliary tract, the ampulla of Vater [24], the stomach [25], endometrium [26], lung [27], and ovary [28], among others.