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  • Title: Congenital Unilateral Ureteral Stenosis With Hydronephrosis in a Kitten.
    Author: Ioannidi OM, Papazoglou LG, Psalla D, Papadopoulou P, Papazoglou D, Tsampa N, Mylonakis ME.
    Journal: Top Companion Anim Med; 2019 Sep; 36():22-24. PubMed ID: 31472725.
    Abstract:
    A 4-month-old, intact male, domestic longhair cat was admitted with a 2-month history of abdominal distention. Physical examination revealed a mild inspiratory distress and a large palpable intraabdominal mass, in an otherwise bright and alert cat. Abdominal ultrasonography revealed a large hypoechoic cystic structure compatible with hydronephrosis or a renal cyst. On exploratory celiotomy, hydronephrosis of the right kidney was documented and ureteronephrectomy was performed. Histopathology of the excised tissues revealed severe stenosis in the proximal ureteral lumen without evidence of obstructive material, a normal ureteral epithelium and severe atrophy of the renal cortex and medulla, supporting the diagnosis of congenital unilateral ureteral stenosis. The cat recovered uneventfully and 8 months later was in excellent clinical condition. Congenital ureteral stenosis with secondary hydronephrosis may occur rarely in cats and should be included in the differential diagnosis of progressive abdominal distention in young cats.
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