Most common site of sinusitis in children: (A) Maxillary sinus, (B) Ethmoidal sinus, (C) Frontal sinus, (D) Spenoid sinus
Answer is B. Acute ethmoid sinusitis Aetiology Acute ethmoiditis is often associated with infection of other sinuses. Ethmoid sinuses are more often involved in infants and young children. (Ref: Diseases of ENT, PL Dhingra, 7th edition, of no. 216)