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Peer-reviewed veterinary case report

Nannizziopsis guarroi fungal infection causing skin lumps in Inland

By Le Donne, Viviana et al.·Published in Veterinary clinical pathology·2016·Department of Pathobiological Sciences, United States·View original on PubMed

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Original publication title: Nannizziopsis guarroi infection in 2 Inland Bearded Dragons (Pogona vitticeps): clinical, cytologic, histologic, and ultrastructural aspects.

Species:
reptile
Skin & coat

Plain-English summary

Two Inland Bearded Dragons were diagnosed with a fungal infection called Nannizziopsis guarroi, which is linked to yellow fungus disease. One dragon had a growing lump over its left eye and several other bumps on its back, while the second dragon was examined after passing away due to suspected yellow fungus disease. Tests showed severe skin inflammation and the presence of the fungus in their lesions. Unfortunately, the second dragon did not survive, but the first dragon's condition highlights the importance of early detection and treatment for skin infections in reptiles.

People also search for: bearded dragon skin infection · yellow fungus disease in reptiles · Nannizziopsis guarroi treatment

Abstract

Chrysosporium-related infections have been increasingly reported in reptiles over the last 2 decades. In this report, we describe clinical, cytologic, histopathologic, and ultrastructural aspects of Chrysosporium-related infection in 2 Inland Bearded Dragons (Pogona vitticeps). Case 1 was presented for an enlarging raised lesion over the left eye and multiple additional masses over the dorsum. Case 2 was submitted to necropsy by the referring veterinarian for suspected yellow fungus disease. Impression smears of the nodules in case 1 revealed granulomatous to pyogranulomatous inflammation and many septate, variably long, 4-10 μm wide, often undulated hyphae, and very rare conidia. Postmortem impression smears of the superficial lesions of case 2 contained large numbers of solitary conidia and arthroconidia and low numbers of hyphae with similar morphology to case 1. Histopathology of the 2 cases revealed severe, multifocal, chronic, ulcerative, nodular pyogranulomatous dermatitis, with myriad intralesional septate hyphae, and arthroconidia. Fungal culture and molecular sequencing in both cases indicated infection with Nannizziopsis guarroi.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/27010762/