Hypertensive Cardiomyopathy as a Sequel to Hydronephrosis Induced by Transitional Cell Carcinoma.

A 10-year-old female Griffon dog was presented for evaluation due to a 5-month history of hematuria and systemic hypertension. Thoracic auscultation detected a grade II/VI left apical systolic murmur. Abdominal ultrasound revealed the presence of a heterogeneous mass at the trigonal area of the urinary bladder, extending to the left ureter cranially and caudally toward the bladder's neck. Marked left hydronephrosis and hydroureter were detected as well as mild right hydronephrosis. Cytological examination of urine sediment confirmed the presence of transitional cell carcinoma. Echocardiography disclosed marked left ventricular concentric hypertrophy, which likely developed as a consequence of systemic hypertension induced by the bilateral hydronephrosis due to bladder transitional cell carcinoma.