This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plastic & Reconstructive Surgery, Subject name: Surgery
Carcinoma known for perineural invasion - 
Select and explain. 
A. Adenoid cystic carcinoma, B. Mucoepidermoid carcinoma, C. Pleomorphic adenoma, D. Squemous cell carcinoma
A: Adenoid cystic carcinoma
Answer: A: Adenoid cystic carcinoma 
Explanation: Ans. is 'a' i.e., Adenoid cystic carcinoma "Adenoid cystic carcinoma, which has a propensity for neural invasion, is the second most common malignancy in adults. Skip lesions along nerves are common and can lead to treatment failures because of the difficulty in treating the full extent of invasion. Adenoid cystic carcinomas have a high incidence of distant metastasis, but display indolent growth. It is not uncommon for patients to experience lengthy survival despite the presence of disseminated disease ", -- Schwartz 8/e"Treatment consists of removal of gross tumor with radiation therapy for the microscopic disease that is assumed to exist at the periphery of the tumor__ Sabiston 18/e p836