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The Thai Journal of Veterinary Medicine

Abstract

5-year-old neutered male domestic shorthair cat was presented with unilateral anterior uveitis and ocular pain in the left eye without systemic signs. Ophthalmic examination revealed a superficial corneal ulcer, keratic precipitates, and aqueous flare. Ocular ultrasonography identified ciliary body thickening and a nodular mass-like lesion posterior to the ciliary body. Despite systemic corticosteroid treatment after corneal ulcer healing, no clinical improvement was observed. Computed tomography revealed contrast-enhancing thickening of the ciliary body and uveoscleral region. Enucleation and histopathology demonstrated pyogranulomatous inflammation without evidence of neoplasia or detectable infectious organisms. Immunohistochemistry for feline coronavirus antigen was not performed at that time. Therefore, idiopathic immune-mediated uveitis was initially presumed after exclusion of neoplasia and identifiable infectious agents. Three months later, similar lesions developed in the contralateral eye, accompanied by anemia and abdominal effusion, leading to a presumptive diagnosis of feline infectious peritonitis. Following treatment with FIP-specific antiviral treatment (GS-441524), the uveitis resolved. This case suggests that presumptive feline infectious peritonitis-associated pyogranulomatous inflammation posterior to the ciliary body may mimic intraocular neoplasia on ocular ultrasonography.

DOI

10.56808/2985-1130.4090

First Page

1

Last Page

6

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