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Summary
Transitional cell carcinoma of the renal pelvis is uncommon. High-dose excretion urography is the primary diagnostic tool, with further imaging needed for complex cases.
Area of Science:
- Urology
- Radiology
- Oncology
Background:
- Transitional cell carcinoma (TCC) of the renal pelvis is a rare malignancy.
- Accurate diagnosis relies heavily on appropriate radiological investigation.
Purpose of the Study:
- To review cases of renal pelvis TCC to determine the optimal imaging examination.
- To categorize diagnostic challenges based on radiological findings.
Main Methods:
- Retrospective review of 38 transitional cell carcinomas in 37 patients.
- Analysis of high-dose excretion urography findings tailored to clinical presentation.
Main Results:
- Five distinct groups of radiological findings were identified.
- Group I (discrete filling defects) and Group II (filling defects with dilated calyces) are diagnosed via urography.
- Groups III, IV, and V require additional investigations like retrograde pyelography, renal angiography, or antegrade pyelography for definitive diagnosis.
Conclusions:
- High-dose excretion urography is the primary imaging modality for renal pelvis TCC.
- The diagnostic approach must be tailored to the specific radiological presentation to ensure accurate diagnosis and management.