Diagnosis and imaging in urinary tract infections
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Updated: Oct 3, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
1Urology Section, Telemark Central Hospital, Porsgrunn, Norway. trulesbj@frisurf.no
Insights
Imaging is crucial for urinary tract infections to prevent kidney damage and complications. Diagnostic imaging strategies vary by age and infection severity, guiding treatment and improving patient outcomes.
Area of Science:
- Radiology
- Urology
- Pediatrics
Background:
- Urinary tract infections (UTIs) require prompt diagnosis and management to prevent severe complications.
- Congenital conditions like hydronephrosis in newborns can predispose to vesicoureteral reflux and renal scarring.
- The necessity and type of imaging for UTIs differ significantly across age groups and clinical presentations.
Purpose of the Study:
- To outline the diagnostic imaging approach for urinary tract infections (UTIs).
- To identify patient populations benefiting from imaging to avoid immediate deterioration, recurrence, or long-term kidney damage.
- To differentiate imaging needs based on patient demographics and clinical suspicion of complicated UTI.
Main Methods:
- Review of current literature and clinical guidelines on imaging in UTIs.
- Analysis of imaging's role in various UTI presentations, including pyelonephritis, cystitis, and prostatitis.
- Stratification of imaging recommendations by patient age (newborns, children, adults) and sex.
Main Results:
- In newborns with hydronephrosis, vesicoureteral reflux and scarring are congenital, not infection-related.
- Selective imaging in children with UTIs is recommended for those at risk of renal damage.
- In adult females, imaging is generally not needed for cystitis but recommended for acute pyelonephritis.
- Early and comprehensive imaging is advised for men with UTIs due to the rarity of uncomplicated cases.
- Imaging in male reproductive tract infections aids in detecting abscesses and ruling out malignancies.
Conclusions:
- Imaging plays a vital role in managing UTIs by detecting treatable conditions and preventing complications.
- Tailored imaging strategies based on age, sex, and clinical context are essential for effective UTI management.
- Appropriate use of diagnostic imaging can significantly reduce morbidity associated with urinary tract infections.
Abstract:
The aim of imaging in urinary tract infection is to detect conditions that must be treated in order to avoid immediate deterioration or recurrences, and probable long-term kidney damage. In newborns identified with hydronephrosis during pregnancy or by neonatal screening, vesicoureteral reflux and renal scarring are congenital and not caused by infection. Most of these patients are male and the vesicoureteral reflux is of a higher grade than that detected in girls having had urinary tract infection. In children with urinary tract infection, several authors advocate a more selective policy and recommend imaging only in those children who are at risk for developing renal damage. In adult females no imaging is necessary in cystitis, whereas ultrasonography and plain films are recommended in acute pyelonephritis. Because uncomplicated urinary tract infection in men is rare, diagnostic evaluation including imaging should be started early in order to rule out complicating factors within the urinary tract. The role of imaging in prostatitis, vesiculitis, epididymitis and orchitis is primarily to rule out abscess formation, but also to exclude testicular malignancies.
Related Concept Videos
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies III: Computed Tomography
Imaging Studies II: Ultrasonography
Acute Pyelonephritis II: Diagnostic Studies and Management
Imaging Studies I: Kidney, Ureter, and Bladder Studies

