Pulmonary acariasis and intestinal oesophagostomiasis in a pig-tailed macaque (Macaca leonina) Debroy Biplab1,*, Balachandran C.1 1Department of Veterinary Pathology, College of Veterinary Sciences and Animal Husbandry, R.K. Nagar-799008, Tripura, India *Corresponding author: e-mail: biplabvets@yahoo.co.in
Abstract A six years old male pig-tailed macaque (Macaca loenina) carcass was received for necropsy examination from Sepahijala Zoological Park, Tripura with the history of weakness, debility and anorexia. On necropsy examination, lungs revealed multifocal irregular grey-ish-white nodules of 1–2 mm size containing off white caseousor yellowish purulent materials scattered over in most of the lobes. Histo- pathologically, lungs revealed presence of mites in the alveoli and bronchial lumen surrounded by granulomatous reactions consisting of macrophages, lymphocytes, plasma cells, a few eosinophils and brownish pigments. In colon, numerous greyish-white nodules of 2–5 mm size containing creamycaseous or yellowish purulent material were observed leading to extensive thickening of the colon wall and reducing the size of the lumen. Similar nodules were also present on mesentery causing adhesion and thickening of the mesentery. Histopathological examination showed encapsulated granulomatous nodules in the submucosa extending up to muscularis mucosa. These nodules contained caseous necrotic material along with cross sections of larvae surrounded by macrophages, epithelioid cells, giant cells and plasma cells. This case was diagnosed as concurrent pulmonary acariasis and intestinal oesophagostomiasis. Top Keywords Macaca leonina, Oesophagostomiasis, Pig-tailed macaque, Pulmonary acariasis. Top |