The nasal cavity and paranasal sinuses are host to many diseases and conditions, collectively termed sinonasal disease.
Pathology
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inflammatory and infective conditions
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non-invasive: hyphae do not invade mucosa
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invasive: hyphae seen invading mucosa +/- beyond
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granulomatosis with polyangiitis (formerly known as Wegener granulomatosis)
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neoplastic
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benign
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fibrous-osseous lesions
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malignant tumors
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others