Gallbladder Pyloric Gland Adenoma

**Semantic type:** Neoplastic Process

**Definition:** An adenoma that arises from the gallbladder and is characterized by the presence of uniform back-to-back mucinous glands forming tubular structures.

**Synonyms:** - Gallbladder PGA - Gallbladder Tubulopapillary Adenoma - Intracholecystic Papillary Tubular Neoplasm, Gastric Pyloric, Simple Mucinous Type