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 malignancy arising in thyroglossal cyst is 
Select and explain. 
A. Follicular, B. Papillary, C. Medullary, D. Anaplastic
B: Papillary
Answer: B: Papillary 
Explanation: Thvroglossal Cyst Contains clear to cloudy fluid with sparse cellularity. Cystic background contains few if any epithelial cells. Some inflammatory cells and crystals might be present. Rarely malignant transformation occurs in about 1% of the cases. Most common malignancy arising is papillary carcinoma followed by squamous cell carcinoma.