Systemic lupus erythematosus with obstructive uropathy. Case report and review.

We report a case of patient with documented SLE who displayed dysuria, gastrointestinal (GI) symptoms and renal insufficiency associated with the unusual occurrence of bilateral hydroureteronephrosis due to urterovesical junction stricture (obstructive uropathy). Pathologic investigations disclosed chronic interstitial cystitis (IC) with evidence of focal immune complex deposition in the blood vessel walls of the bladder. The GI symptoms and dysuria regressed with initial therapy for SLE with steroids. However, the persistent obstructive uropathy (OU) and renal insufficiency required bilateral nephrostomy followed by steroids plus intravenous pulse injection of cyclophosphamide. The obstructive uropathy was relieved even after removing the nephrostomy tube and renal function remained stable. Including this case, nineteen SLE patients associated with clinical and radiographic findings of OU were found in the world literature and reviewed to find any consistent pattern of clinical features. Most of the patients with OU in SLE were female (mean age, 31.7 yr) and orientals (63%), and had interstitial cystitis (89%) as a common underlying cause with concomitant involvement of the GI tract (89%) and WHO class IV or V advanced glomerulonephritis (67%). Despite the remarkable response (68%) to steroids in majority of OU patients associated with SLE, certain patients still required surgical correction (32%) and some even died (32%). OU, potentially reversible, was not an exception in patients with SLE, which might be overshadowed by other major organ involvement of SLE.