鼻窦炎英文版Anatomy of the nasal sinuseslAnterior sinus : maxillary sinus frontal sinus anterior ethmoidal sinusThey all open in the middle meatus.l Posterior sinus: posterior ethmoidal sinus :open in the superior meatus sphenoid sinus: open in sphenoethmoidal recess overviewlSinusitis has been defined as an inflammation of the mucous membrane of the sinuses.ltwo types- acute sinusitis and chronic sinusitis.Acute sinusitisl Acute inflammation of sinus mucosa l This commonly follows a cold . l The sinu