*Common in cats, less often in dogs, also horses and sheep
*Common in cats, less often in dogs, also horses and sheep
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*Also see [[Nasal Cavity Hyperplastic and Neoplastic - Pathology#Progressive ethmoidal haematoma|Progressive haematoma]] of horses and [[Nasopharyngeal Polyps|Nasopharyngeal polyps]] of cats
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*Also see [[Nasal Cavity Hyperplastic and Neoplastic - Pathology#Progressive ethmoidal haematoma|Progressive haematoma]] of horses and [[Nasopharyngeal Polyp|Nasopharyngeal polyps]] of cats