Mucinous neoplasm

Mucinous neoplasm
Other names	Colloid neoplasm
Micrograph of a mucinous adenocarcinoma of the colon. H&E stain.
Specialty	Oncology

A mucinous neoplasm (also called colloid neoplasm) is an abnormal and excessive growth of tissue (neoplasia) with associated mucin (a fluid that sometimes resembles thyroid colloid). It arises from epithelial cells that line certain internal organs and skin, and produce mucin (the main component of mucus). A malignant mucinous neoplasm is called a mucinous carcinoma. For example, for ovarian mucinous tumors, approximately 75% are benign, 10% are borderline and 15% are malignant.