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What is A 2 year old child with purulent nasal discharge,fever and pain since 2 months. His fever is 102-103 F, and leucocyte count is 12000 cu/mm.X ray PNS showed opacification of left ethmoidal air cells.The culture of the eye discharge was negative. which of the following would be most useful fuher step in evaluation of this patient? and explain in detail?
The best method to assess the state of ethmoidal air cells and it's complications is CT Scan. "CT is paicularly useful in ethmoid and sphenoid sinus infections and has replaced studies with contrast material". Ref Dhingra 5/e,p 209.