Indian Journal of Veterinary Pathology
  • Year: 2024
  • Volume: 48
  • Issue: 2

Melanosis of the Thyroid Gland in Sheep - A Case Report

  • Author:
  • M.V.S. Sudarsan Reddy, N. Sailaja*, P. Amaravathi, M. Sravanthi1
  • Total Page Count: 2
  • Published Online: Jun 28, 2024
  • Page Number: 199 to 200

1State Level Diagnostic Laboratory, SVVU, Tirupati-517 502, Andhra Pradesh, India

Department of Veterinary Pathology, College of Veterinary Science, Tirupati-517 502, Sri Venkateswara Veterinary University, Andhra Pradesh, India

*Address for Correspondence: N. Sailaja, Professor, Department of Veterinary Pathology, College of Veterinary Science, Tirupati-517 502, Sri Venkateswara Veterinary University, Andhra Pradesh, India, E-mail: sailajapath@gmail.com

Online Published on 28 June, 2024.

Abstract

Thyroid gland of a sheep, collected from a slaughterhouse in Tirupati, revealed a cyst in the right lobe filled with inspissated material and surrounded by a black discoloured area. Histopathological, examination revealed multifocal deposition of brown to black pigment within and outside the interfollicular cells and the presence of an ultimobranchial cyst on the periphery of the thyroid gland. Melanin bleach staining confirmed the pigment as melanin.

Keywords

Melanin, Sheep, Ultimobranchial cyst