label: Rectosigmoid Mucinous Adenocarcinoma
label_lc: rectosigmoid mucinous adenocarcinoma
description: An invasive adenocarcinoma of the rectosigmoid area characterized by the presence of pools of extracellular mucin.  Malignant glandular epithelial cells are present in the mucin collections.  Mucin constitutes more than 50% of the lesion.