Perineural invasion is seen in:: (A) Mucoepidermoid carcinoma, (B) Acinic cell carcinoma, (C) Adenoid cystic carcinoma, (D) Pleomorphic adenocarcinoma
Answer is C. Ans. (c) Adenoid cystic carcinomaRef Bailey 26/e p723* MC type of Adenoid Cystic Carcinoma - Cribriform Pattern which is characterized by Swiss Cheese Appearance.Other name is Cylindroma* MC type of Minor Salivary gland tumor - Adenoid Cystic (Most common site - hard palate)* May invade the nerves (Most common - Facial nerve)* May invade the Haversian System of Bones* MC site of Metastasis is to LUNGS (usually multiple metastasis)