A case report to a successful surgical treatment of non-catheter dependent benign prostatic hyperplasia as a cause of non-dilated obstructive uropathy

Large benign prostatic hyperplasia (BPH) that obstructs the urinary bladder neck was a known cause of acute renal dysfunction. However, it is rare to get renal impairment in a non-dilated upper tract caused by BPH. We are reporting a case of a man who presented to our urology unit with remarkable renal impairment due to concurrent BPH, with no evidence of a dilated system. The patient is a 65-year-old man who presented to our urology unit for the complaints of severe irritative and obstructive symptoms of the lower urinary tract for the past few months. Initial renal function test showed severe renal impairment and ultrasound of kidney urinary and bladder (KUB) revealed normal bilateral kidneys with no evidence of hydronephrosis bilaterally. The patient subsequently underwent transurethral resection of the prostate (TURP) in our centre and his kidney function instantaneously returned to normal before discharging home. Dilated urinary system in obstructive uropathy does not always correspond to the degree of obstruction as in our case. Thus, immediate intervention to release obstruction in a non-dilated urinary system due to bladder neck obstruction is recommended.