Pancreaticobiliary Mucinous Cystic Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A non-invasive neoplasm that arises from the exocrine pancreas, gallbladder, or bile ducts and is characterized by the presence of neoplastic columnar mucin-producing epithelial cells that form papillae, cystic changes, underlying ovarian-type stroma, and dysplasia. It is classified as low- or high-grade.

**Synonyms:** - MCN - Mucinous Cystic Neoplasm - Pancreaticobiliary MCN