Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Magnetic Resonance Findings of a Canine Benign Uveal Melanocytoma

  • Yoon, Hyounglok (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • An, Taegeon (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • Lee, Hanbin (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • Kim, Dongwook (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • Chang, Jinhwa (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • Kang, Ji-houn (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • Kim, Gonhyoung (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University) ;
  • Chang, Dongwoo (Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University)
  • Received : 2018.04.12
  • Accepted : 2018.09.11
  • Published : 2018.12.31
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Abstract

A 13-year-old spayed female Beagle dog was referred with high intraocular pressure, hyperemia, and exophthalmos of the left eye and underwent ultrasound, which revealed a mass in the ciliary body of the left eye. Magnetic resonance (MR) imaging was ordered to evaluate invasion of surrounding structures and metastasis to the brain via the optic nerve. On MR imaging, a single, well-defined, smoothly marginated, triangular-to-oval-shaped mass was found. The mass was hyperintense on T1-weighted images and hypointense on T2-weighted images, similar to a previous case of ocular melanoma. The mass originated from the ciliary body and extended from the anterior chamber to the posterior chamber. Slight enhancement was observed in the mass. There was no evidence of invasion into surrounding structures or the optic nerve, and no sign of metastasis to the brain. The mass was histopathologically diagnosed as benign uveal melanocytoma.

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References

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