Use of intravenous urography

Area of Science:

• Urology
• Radiology
• Diagnostic Imaging

Background:

• Intravenous urography (IVU) is a common diagnostic tool.
• Understanding IVU's diagnostic yield across different clinical presentations is crucial for optimizing patient care.
• Variability in IVU findings necessitates analysis of its effectiveness in specific patient groups.

Purpose of the Study:

• To evaluate the diagnostic yield of intravenous urography (IVU).
• To determine the proportion of abnormal IVU results across various clinical indications.
• To assess the impact of prior diagnostic tests on IVU effectiveness.

Main Methods:

• Retrospective analysis of 1,476 intravenous urographic examinations.
• Categorization of patients based on clinical indications (e.g., abdominal pain, renal colic, prostatism, hematuria, renal hypertension).
• Correlation of IVU findings with clinical presentation and subsequent investigations like cystoscopy.

Main Results:

• Abnormal IVU results ranged from 20% (abdominal pain) to 92% (prostatism).
• Patients with hematuria had a higher likelihood of abnormal urograms and cystoscopy findings.
• Renal hypertension cases showed abnormalities not detected by IVU in all instances.
• Previous diagnostic tests may enhance IVU effectiveness.

Conclusions:

• The diagnostic utility of IVU is highly dependent on the clinical indication.
• IVU is most effective in evaluating conditions like prostatism and hematuria.
• Integrating IVU with other diagnostic modalities and considering prior test results can improve diagnostic accuracy.