<prompt> Most common sinus predisposed to malignancy which of the following?EthmoidMaxillaryFrontalSphenoid  <response>: 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. 