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Ethmoidal Sinusitis
Definition 1
An acute or chronic inflammatory process affecting the mucous membrane of the ethmoid sinus. (NCI Thesaurus)
Definition 2
Inflammation of the ethmoid sinus. It may present itself as an acute (associated with viral rhinitis) or chronic (associated with allergic or hyperplastic sinusitis) condition. (NLM, Medical Subject Headings)
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