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Peer-reviewed veterinary case report

Penicillium fungal eye infection in a Border Collie dog

By Wood, J et al.·Published in Australian veterinary journal·2025·Perth Animal Eye Hospital, Australia·View original on PubMed

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Original publication title: A case report of Penicillium chorioretinitis in a Border Collie dog.

Species:
dog

Plain-English summary

A middle-aged Border Collie was brought in with eye problems, specifically an infection caused by a rare fungus called Penicillium. The dog's right eye was affected, but there were no signs of illness in other parts of the body. Due to cost concerns, the vet couldn't run all the usual tests, but they were able to confirm the diagnosis by culturing fluid from the eye. This case shows how important it is to collect eye fluids for diagnosing unusual infections.

People also search for: dog eye infection treatment · Border Collie fungal eye infection · Penicillium in dogs · dog eye problems symptoms

Abstract

Systemic fungal pathogens typically gain entry through a single portal and disseminate to affect multiple body systems. Infections caused by fungal Penicillium species are rare in dogs, and these cases have a poor prognosis. An unknown Penicillium species was isolated from the right eye of a middle-aged Border Collie without evidence of systemic disease. Due to financial limitations, an extensive diagnostic evaluation could not be performed. Histopathology alone failed to identify the specific causative agent; however, fungal culture on aqueous humor provided the definitive diagnosis. This case highlights the advantage of collecting ocular fluids after enucleation to diagnose atypical fungal infections.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39551486/