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
Pathognomic features of Maxillary sinusitis is: 
Select and explain. 
A. Mucopus in the middle meatus, B. Inferior turbinate hypertrophy, C. Purulent nasal discharge, D. Atrophic sinusitis
A: Mucopus in the middle meatus
Answer: A: Mucopus in the middle meatus 
Explanation: (Mucopus in middle meatus) (182, Dhingra 4th) (209-Maqbool 11th)* In maxillary sinusitis - pus is seen in the middle meatus particularly when the head is kept is down with infected sinus uppermost (maqbool)* Presence of mucopus in the nose is suggestive of sinus infection and its position determines the sinus involved* Most common pathological changes are the result of increased vascular permeability causing hypertrophy of the mucosa which may eventually become polypoidal.* Purulent nasal discharge is the commonest complaint* Occipitomental view (Water's view) is helpful. CT sinus is diagnostic