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Cat Health News Blog

A resource for dedicated cat supporters

Since its start in 2007, Cat Health News has featured the latest information on feline health. The bi-weekly blog is a mix of the most current published research from Winn-funded research and other sources. There are over 875 blog post items and more than 1,000 subscribers through the RSS feed.


icon-blogWinn-funded research is specifically noted by the small green cat.

  • Atypical cutaneous cryptococcosis in cats

    Sep 29, 2017
    Myers A, Meason-Smith C, et al. Atypical cutaneous cryptococcosis in four cats in the USA. Vet Dermatol. 2017 Aug;28(4):405-e97.

    Cryptococcus is a fungus causing infection infections in humans and mammals including cats. In fact, it is the most common systemic fungus of cats worldwide. It usually affects the respiratory tract, in particular the nasal cavity and sinuses. It is less commonly associated with skin lesions. Typically, numerous organisms with a thick capsulecryptococcus are typically present microscopically, and are associated with mild dermatitis. The abundant organisms lend a classic “soap bubble” appearance to stained microscope slides of affected tissues.

    These authors describe an unusual manifestation of infection in four cases. Grossly, lesions were primarily nodular or papular in nature with rare ulceration. Microscopically, there was severe inflammation involving eosinophils and rare Cryptococcus organisms lacking their capsules. These intralesional organisms were uncommon making them difficult to find on routine examination. The authors conclude that when severe inflammatory dermatitis is found without an identifiable cause, special testing for Cryptococcus organisms should be done. (MK)

    See also:
    Evans SJM, Jones K, Moore AR. Atypical Morphology and Disparate Speciation in a Case of Feline Cryptococcosis. Mycopathologia. 2017 Jul 29. doi: 10.1007/s11046-017-0183-z. 


    skin cryptococcus

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