Lacrimal Drainage System Adenoid Cystic Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A carcinoma that arises from the lacrimal sac and is characterized by the presence of malignant epithelial cells that form cribriform, tubular, and solid patterns.

**Synonyms:** - Adenoid Cystic Carcinoma of the Lacrimal Drainage System