Branchioma

**Semantic type:** Neoplastic Process

**Definition:** A rare, benign, well-circumscribed or encapsulated tumor that arises from the neck and occurs in adults. It is characterized by the presence of spindle cells, epithelial islands, and adipose tissue.

**Synonyms:** - Biphenotypic Branchioma - Branchial Anlage Mixed Tumor - Ectopic Hamartomatous Thymoma - Ectopic hamartomatous thymoma - Neck Branchioma