author(s)
Thangjam Reena Devi, Dhruba Das, Bedanga Konwar, Hitesh Bayan, Basanta Saikia, Kalyan Sarma, Chethan GE, Dibyajyoti Talukdar, SK Behera, Ashiho Kayina and A Khozhiio Kayina

abstract
A seven-year-old bitch weighing 10.5 kg body weight was presented to Teaching Veterinary Clinical Complex, with a history of urinary incontinence since 3 months with dysuria, haematuria, dribbling of urine at the end of urination. Ultrasound examination of urinary bladder showed the presence of hyperechoic mass with distal acoustic shadow indicative of calculi. Further, lateral and ventro-dorsal radiography examination confirmed the presence of four large-sized bladder calculi. Haematological examination revealed marked lymphocytosis. Urinalysis revealed specific gravity of 1.015, pH 7.9 with the presence of glucose, leukocytes, erythrocytes and trace protein. The microscopic examination of urinary sediment confirmed the presence of ammonium urate crystals. The culture of the urine revealed the presence of Staphylococcus species as the predominant organism. The case was diagnosed as ammonium urate cystolithiasis with cystitis based on history, clinical examination, laboratory evaluation and imaging techniques. Four different sizes of calculi weighing altogether 40 gm were successfully removed by cystotomy procedure. The animal made an uneventful recovery after the surgical management.