author(s)
Anubhav Khajuria, Rouf Rashid Dar, Simranjeet Singh, Pooja Dogra, Jatin Khurma, Amir Amin Sheikh, Sheikh Firdous Ahmad and Rakshanda Bhagat

abstract
The objective of the present study was to remove surgically 1.3 kg tumor mass successfully under general anaesthesia (Ketamine with Diazepam) after proper sedation with pre-anaesthetics like Atropine and Xylazine. A ten-year-old 40 kg male Bhotia dog was presented to Animal Birth Control Centre (ABCC) Nagar Nigam Dehradun Utrakhand India in August, 2017 with a huge firm irregular superficial mass present in the left axillary region since one year. Further, pre-scapular lymph nodes were greatly enlarged and the dog was not eating properly besides showing reluctance to stand. Histopathological findings revealed presence of round cells which were identical to mast cells showing high nucleo-cytoplasmic ratio, nuclear pleomorphism and hyperchromasia, grayish to bluish cytoplasmic granules, few mitotic figures and nuclear binucleation along with moderate eosinophillic and lymphocytic infiltration confirming the mast cell tumor diagnosis. The thoracic radiography did not revealed any sign of metastasis of the tumor to any visceral organ.