1/4. Minimally dilated obstructive nephropathy initially suspected as pre-renal azotemia in a kidney donor with volume depletion.Although ultrasonography is regarded as the gold standard in the diagnosis of obstructive nephropathy, dilatation is sometimes not observed by ultrasonography. We report upon a case of minimally dilated obstructive nephropathy due to an ureter stone in a kidney donor with volume depletion. A 54-year-old man was admitted due to anuria and abdominal pain of 2 days duration. Ten years previously, his right kidney was donated for transplantation, and one month before admission, he abstained from all food except water and salt, for 30 days for religious reasons. He had lost 8 kg of body weight. On admission, he had clinical signs of volume depletion, i.e., a dehydrated tongue and decreased skin turgor. Laboratory data confirmed severe renal failure, his blood urea nitrogen level was 107.3 mg/dL, and his serum creatinine 16.5 mg/dL. The plain X-ray was unremarkable and ultrasonography showed only minimal dilatation of the renal collecting system. On follow-up ultrasonography, performed on the 5th hospital day, the dilatation of the collecting system had slightly progressed and a small stone was found at ureter orifice by cystoscopy. Removal of stone initiated dramatic diuresis with a rapid return of renal function to normal by the third day.- - - - - - - - - - ranking = 1keywords = azotemia (Clic here for more details about this article) |
2/4. urolithiasis with blind-ending ureteral duplication and azotemia treated with shock wave therapy.A case of bilateral urolithiasis and renal insufficiency with a blind-ending branch of the right bifid ureter is presented. The diagnosis was made by retrograde ureterogram which revealed a blind-ending branch originating in the middle third of the right ureter. Stones were treated with phased extracorporeal shock wave lithotripsy after preliminary bilateral JJ stenting. The renal parameters reverted to normal and the patient was stone-free.- - - - - - - - - - ranking = 1keywords = azotemia (Clic here for more details about this article) |
3/4. Unusual complication of therapy with sulfamethoxazole-trimethoprim.The first case of an obstructing stone composed of a pure metabolite of the sulfamethoxazole-trimethoprim combination is reported. Its coincident occurrence with an obstructing calcium oxalate stone, producing oligura and acute azotemia, is noteworthy.- - - - - - - - - - ranking = 0.25keywords = azotemia (Clic here for more details about this article) |
4/4. A case of reflex anuria and uremia related to a unilateral ureteral stone.A 63-year-old man had anuria associated with a unilateral ureteral stone for 24 hours. Laboratory data indicated marked azotemia with the serum creatinine concentration of 7.2 mg/dL and urea nitrogen of 48 mg/dL. The radiological findings revealed contralateral hydronephrosis. Spontaneous discharge of the ureteral stone reversed the anuria and uremia. Both ureteral and vascular spasms were attributed to the anuria in this patient.- - - - - - - - - - ranking = 0.25keywords = azotemia (Clic here for more details about this article) |