This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Most common salivary gland tumor in children: 
Select and explain. 
A. Lymphoma, B. Adenoid cystic Ca, C. Pleomorphic adenoma, D. Mucoepidermoid Ca
C: Pleomorphic adenoma
Answer: C: Pleomorphic adenoma 
Explanation: The commonest benign tumor encountered is pleomorphic salivary adenoma accounting for approximately 30% of all pediatric salivary neoplasma. The majority occur within the parotid gland. Most common malignant tumor of salivary gland in childhood: Mucoeidermoid carcinoma, approximately 50% followed by acinic cell carcinoma (20%)