Colliquative and/or dirty necrosis are predominantly found in MUC1-positive adenocarcinomas of the pancreas (38) and colorectum (29), whereas the absence of necrotic phenomena is characteristically found in MUC2-positive mucinous adenocarcinomas of the gastrointestinal tract (36,39). The gene discussed is MUC2; the disease is colon mucinous adenocarcinoma.