Ultrasound for Common Urologic Conditions

Blood in the urine (haematuria). Visible blood in urine always needs prompt GP assessment and usually urology referral — that rule comes first. Within that pathway, ultrasound assesses the kidneys and bladder for stones, masses and structural causes. What it cannot do is fully inspect the bladder lining: small lining lesions need cystoscopy, which is exactly why the referral matters even when a scan is reassuring.

Recurrent urinary infections. When infections keep returning, the question is whether something structural is helping bacteria persist — a stone, a pocket of incompletely emptied urine, an obstruction. The scan checks each, and the post-void residual measurement (how much urine stays behind after you empty) is often the single most useful number in the report.

Kidney stones and loin pain. Ultrasound shows stones in the kidneys and — just as importantly — hydronephrosis: a kidney swelling because urine is backing up behind a blockage. Small stones already travelling down the ureter can hide behind bowel gas, so a convincing stone story with a clean scan sometimes moves to CT via your GP; the report says so when it applies.

Weak flow and incomplete emptying. The full-and-empty bladder assessment quantifies the problem rather than guessing at it. In men, bladder outflow symptoms often sit alongside prostate enlargement — assessed via the bladder’s behaviour on this scan, with dedicated assessment available where needed. In women, the same measurements inform continence and prolapse care.

Incontinence. Leakage with coughing, sneezing or exercise (stress incontinence), an overwhelming urge that arrives too fast (urge incontinence), or constant dribbling from an overfull bladder (overflow) are clinical diagnoses — but ultrasound contributes the structural half: residual volume, bladder wall appearance, and the exclusion of stones or masses that mimic or worsen the picture.