[A case of renocolic fistula complicating xanthogranulomatous pyelonephritis treated by laparoscopy].

The authors report a case of xanthogranulomatous pyelonephritis complicated by renocolic fistula. This is a rare complication. The patient was treated by right nephrectomy and closure of the fistula performed by manually assisted laparoscopic surgery.

[Transcaval ureter].

The authors report a case of transcaval ureter complicated by acute obstructive pyelonephritis in a 54-year-old patient. Transcaval ureter is a rare congenital malformation of the infra-renal inferior vena cava (IRIVC) in which the right ureter passes through a venous ring composed of localized duplication of the vena cava due to persistence of the right posterior cardinal and supracardinal veins.

[Sarcomatoid carcinoma of the bladder with major osseous metaplasia].

The authors describe a case of sarcomatoid carcinoma of the bladder, in which the stroma presented marked calcified bone metaplasia. Mechanical lithotripsy of the tumor was necessary to allow transurethral resection.

[Kidney varices: an unusual location].

The authors report the case of a 40-year-old woman who presented with very large right renal varices. Computed tomography and arteriography showed that these varices were situated on the convex surface of the kidney, in front of its anterior surface, and drained venous blood derived from the renal parenchyma. These varices were probably secondary to undiagnosed renal vein thrombosis.