Obstructive uropathy Flashcards
Common causes of urinary tract obstruction within the renal pelvis
Calculi
Tumors
Ureteropelvic stricture
Common causes of urinary tract obstruction intrinsic to the ureter
Calculi
Tumors
Clots
Sloughed papillae
Inflammation
Common causes of urinary tract obstruction extrinsic to the ureter
Pregnancy
Tumors
Retroperitoneal fibrosis
Common causes of urinary tract obstruction in the bladder
Calculi
Tumors
Functional (neurogenic)
Common causes of urinary tract obstruction in the prostate
Hyperplasia
Carcinoma
Prostatitis
Common causes of urinary tract obstruction in the urethra
Posterior valve stricture
Tumor (rare)
Congenital anomalies that may cause urinary tract obstruction
Posterior urethral valves
Urethral strictures
Meatal stenosis
Bladder neck obstruction
Ureteropelvic junction narrowing or obstruction
Severe vesicoureteral reflux
Specific tumors that may cause urinary tract obstruction
Carcinoma of prostate
Bladder tumors
Contiguous malignant disease (retroperitoneal lymphoma)
Carcinoma or cervix or uterus
Dilation of the renal pelvis and calyces associated with progressive atrophy of the kidney
Hydronephrosis
Possibly enlarged kidney with dilatation of the pelvis and calyces, thinning of the cortex, striking parenchymal atrophy, and total obliteration of the pyramids.
Hydronephrosis
Microscopic features of hydronephrosis
Interstitial inflammation and fibrosis
Tubular atrophy
Result of removal of complete bilateral urinary tract obstruction associated with hydronephrosis
Massive diuresis with lost of NaCl
Most important cause of renal stone formation
Supersaturation of urine
Inhibitor of crystal formation in urine that may be deficient
Nephrocalcin
What decreases the likelihood of renal stone formation via chelation?
Citrate