Suppurative Pyelonephritis in a Dog: A Complication from Biting Wound

Abstract

A 2-year-old. male native dog was suffered from a chronic biting wound on the left flank for several months. Serous exudate oozed from the wound. Before the dog was hosipitalized at the Small Animal Hosipital, Faculty of Veterinary Medicine, Kasetsart University, he has begun to loss of appitite and become weak. The left flank area was abnormally enlarged and firm and painful on palpation. On clinical examination, the dog had a fistular wound that penetrated into the abdominal cavity. Radiograph revealed an enlargement of the left kidney. By intravenous pyelography, loss of renal function was detected for the left kidney. Hemogram showed increased of leukocytes. Blood urea nitrogen was 42 mg. %. A tentative diagnosis was hydronephrosis of the left kidney with an infected fistular wound. Surgical removal of the affected kidney was performed under general anesthesia. The inner abdominal opening was sutured from inside and the remained tract was closed after suturing of the incised wound. The affected kidney was ovoid in shape with diameter of 6 inches and had foul-smelling purulent content'inside the renal pelvis. The renal parenchyma was found as thin as a fibrous sheath due to the pressure from the increasing pus content. Bacterial cultures from the pus were P-hemolytic Streptococcus andiStaphylococcus aureus. - The dog recovered very well post-operatively and was sent home on a week later.