A Rare Case of Pulmonary Paragonimiasis and Spirocercosis in a Chippiparai Dog

A one-year-old male Chippiparai dog 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. Fluke and worms were collected for parasitological identification. Grossly, right lung showed a grey patch and on cut section showed the presence of cavity containing two conical flukes. Oesophageal lumen contained spiral worm near the nodule and on section of nodule contained blood mixed exudate. Based on the morphology, the fluke was identified as Paragonimus sp and worm was identified as Spirocerca lupi. Histopathologically, lung revealed the presence of eggs of Paragonimus sp, chronic bronchitis, immature eggs, mature eggs with miracidium, and giant cell. Based on the gross lesions, morphology and histopathology, the very rare case of combined infection of pulmonary paragonimiasis and spirocercosis in a chippiparai dog is documented.