This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
[{'content': 'Most common sinus predisposed to malignancy which of the following? \nSelect and explain. \nA. Ethmoid, B. Maxillary, C. Frontal, D. Sphenoid', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Maxillary * The majority of paranasal sinus malignancies (50-80%) originate within the maxillary sinus antrum.Sinuses and various conditions in which sinuses are affected in descending order of frequency* Developmental-MESF* Sinusitis-MEFS* Mucocele-FEMS* Orbital complication-EFMS* Fungal ball-MSEF* Osteoma-FEMS* Cancer-MEFS* Where, M - Maxillary sinus E - Ethmoid sinus F- Frontal sinus S - Sphenoid sinus.", 'role': 'assistant'}]