A rare case of pulmonary adenocarcinoma in Pattanam sheep

A two-year-old female Pattanam sheep was submitted for necropsy to the Department of Veterinary pathology, Veterinary College and Research institute, Orathanadu. During necropsy, the gross lesions were observed and required tissue samples were collected for histopathology. Grossly, tracheal and bronchial lumen contained frothy exudate. Lungs were adhered to the pleura and showed dark red firm consolidated areas with grey or pale nodular areas. Histopathologically, lungs revealed multifocal adenomatous appearance of the parenchyma. Alveolar wall transformed into cuboidal epithelium as well as columnar epithelium which formed acinar and papillary pattern. Based on the gross lesions and histopathology, a very rare case of pulmonary adenocarcinoma in a Pattanam sheep is documented.