Ovine rhinofacial pythiosis - A case report Vijay Avinash S., Uma S., Gurunathan N.1, Poobitha S., Lakkawar A.W., Kumar R.*, Nair M.G. 1Department of Veterinary Surgery & Radiology, Rajiv Gandhi Institute of Veterinary Education and Research, Puducherry-605 009, India Department of Veterinary Pathology, Rajiv Gandhi Institute of Veterinary Education and Research, Puducherry-605 009, India *Address for Correspondence Kumar R., Professor & Head, Department of Veterinary Pathology, Rajiv Gandhi Institute of Veterinary Education and Research, Puducherry-605 009, India, E-mail: kumarpath70@gmail.com
Online Published on 27 March, 2024. Abstract Pythiosis is an emerging infectious disease caused by the aquatic oomycete Pythium insidiosum, a fungal-like organism. The present report highlights the pathomorphological features of pythiosis recorded in the nasal cavity of a 2-year-old female non-descriptive sheep presented to the Veterinary Clinical Complex, Rajiv Gandhi Institute of Veterinary Education and Research, Puducherry, India. Clinical examination revealed serosanguineous nasal discharge from the left nostril and a growth which was intact with the maxillary bone. Incisional biopsy sample fixed in 10% neutral buffered formalin was processed by routine paraffin embedding technique and sections stained with H&E. Histopathological examination revealed a characteristic pyogranuloma with central amorphous eosinophilic area surrounded by neutrophils, degranulated eosinophils and karyorrhectic debris. Gomori methenamine silver staining revealed thin-walled, non-parallel and sparsely-septate hyphae with ballooning dilations. Based on the clinical signs, histopathology and histochemistry the case was diagnosed as ovine rhinofacial pythiosis. Top Keywords Clinical signs, Histochemistry, Histopathology, Ovine rhinofacial pythiosis. Top |