This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Which tumour have the tendency to invade perineural spaces 
Select and explain. 
A. Adenoid cystic carcinoma, B. Mucoepidermoid Carcinoma, C. Acinic cell carcinoma, D. Adenocarcinoma
A: Adenoid cystic carcinoma
Answer: A: Adenoid cystic carcinoma 
Explanation: Adenoid cystic carcinoma is a relatively uncommon tumour, which in approximately 50% of cases is found in the minor salivary glands (in paicular the palatine glands). Similar neoplasms have been repoed in the nose, sinuses, upper airways, breast, and elsewhere.Although slow growing, adenoid cystic carcinomas are unpredictable tumours with a tendency to invade perineural spacesRobbins pathology 9e pg: 747