Calyceal-Venous Canal

The calyx-venous canal is a fistula between the small renal calyx in the vault and the vein. This is a rare congenital disorder in which there is a connection between the renal calyx and the renal vein.

The cause of the calyx-venous canal is a violation of the embryonic development of the kidneys. Normally, during kidney development, the collecting duct system separates from the venous system. In pathological development, this separation does not occur, and a communication remains between the calyx and the vein.

The main clinical manifestation of the calyceal venous channel is hematuria, that is, blood in the urine. This is due to the fact that blood from the venous system enters the urinary tract. Hematuria is often unilateral and occurs after physical activity.

Diagnosis of the calyceal venous canal is based on imaging methods - ultrasound examination of the kidneys, computed tomography or magnetic resonance imaging. These methods make it possible to identify the presence of a communication between the calyx and the vein.

Treatment of the calyceal venous canal is surgical. Resection of the changed portion of the calyx is performed with suturing of the vein wall defect. With timely treatment, the prognosis is favorable.