ENT General 5d224b29 Most common malignancy in maxillary Sinus is: A Squamous cell Ca B Muco-epidermal Ca C Adeno-cystic Ca D Adenbcarcinoma High-Yield Explanation Malignant tumors of the nasal cavity and paranasal sinuses are rare, with poorly differentiated squamous cell carcinoma of the maxillary sinus being the most common.