An invasive adenocarcinoma of the colon 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. The disease is colon mucinous adenocarcinoma (MONDO_0005007). Also known as: colloid adenocarcinoma of colon, colloid adenocarcinoma of the colon, colloid colon adenocarcinoma, colloidal adenocarcinoma of colon, colloidal adenocarcinoma of the colon, colloidal colon adenocarcinoma, colon colloid adenocarcinoma, colon colloidal adenocarcinoma.