Tonsillar Undifferentiated Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A non-keratinizing carcinoma arising from the tonsil. It is characterized by the presence of large malignant cells with vesicular nuclei, prominent nucleoli, syncytial growth pattern, and a lymphoplasmacytic infiltrate.

**Synonyms:** - Tonsillar Lymphoepithelioma