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Rhinosporidiosis in a domestic cat
L L Wallin1, G D Coleman, J Froeling
1Biotechnics, Chapel Hill, NC, USA.
Abstract:
Rhinosporidiosis was diagnosed in a domestic shorthair cat from a suburb of Washington DC, USA. The clinical presentation of protracted sneezing and epistaxis was associated with a polypoid lesion in the right nostril. Light microscopic examination revealed a polypoid lesion with numerous sporangia containing maturing endospores. Free endospores were present in the stroma of the polyp and lumen of the nasal cavity. Transmission electron microscopy revealed ultrastructural features typical of Rhinosporidium seeberi. The case was followed clinically for a total of 70 months and there were five attempts at surgical excision. This is the first reported case of rhinosporidiosis in a domestic cat.