Lacrimal Drainage System Lymphoepithelial Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A rare nonkeratinizing squamous cell carcinoma that arises from the lacrimal sac or nasolacrimal duct and is characterized by the presence of large cells with vesicular nuclei and prominent nucleoli, a syncytial growth pattern, and a lymphoplasmacytic infiltrate.

**Synonyms:** - Lacrimal Drainage System Lymphoepithelioma-Like Carcinoma - Lymphoepithelial Carcinoma of the Lacrimal Drainage System - Lymphoepithelioma-Like Carcinoma of the Lacrimal Drainage System - Non-Keratinizing Undifferentiated Nasopharyngeal-Type Carcinoma of the Lacrimal Drainage System - Nonkeratinizing Undifferentiated Nasopharyngeal-Type Carcinoma of the Lacrimal Drainage System