A case of primary choroidal malignant melanoma in a cat

Vet Ophthalmol. 2015 Jul;18(4):345-9. doi: 10.1111/vop.12233. Epub 2014 Nov 16.


This report describes the clinical presentation, diagnosis, histological lesions, and prognosis of a primary choroidal malignant melanoma in a 15-year-old cat. The animal was presented for unilateral blindness. On ocular examination, a raised pigmented mass protruding from the posterior pole into the vitreous body was observed by diffuse transillumination and indirect ophthalmoscopy. Ocular ultrasound and computer tomography (CT) scan confirmed localization of the tumor to the posterior segment. The diagnosis of primary choroidal melanoma was confirmed by histopathology after enucleation. To our knowledge, this is the first reported case of a feline malignant melanoma with a primary choroidal localization without iris involvement.

Keywords: cat; choroid; eye; melanoma; ocular tumor; retinal detachment.

Publication types

  • Case Reports

MeSH terms

  • Animals
  • Cat Diseases / diagnosis*
  • Cat Diseases / pathology
  • Cats
  • Choroid Neoplasms / diagnosis
  • Choroid Neoplasms / pathology
  • Choroid Neoplasms / veterinary*
  • Male
  • Melanoma / diagnosis
  • Melanoma / pathology
  • Melanoma / veterinary*
  • Ophthalmoscopy / veterinary