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Percutaneous approach to indeterminate caliceal filling defects
1Department of Urology, Long Island Jewish Medical Center, New Hyde Park, New York.
Urology
|January 1, 1994
Summary
Aberrant renal papillae can mimic urothelial malignancy on imaging. Percutaneous biopsy is crucial for accurate diagnosis, confirming benign aberrant papillae in these cases.
Area of Science:
- Urology
- Nephrology
- Pathology
Background:
- Aberrant renal papillae (ARP) present diagnostic challenges due to overlapping imaging features with urothelial neoplasms.
- Distinguishing ARP from malignancy often requires histological confirmation.
Observation:
- Three cases of caliceal filling defects were managed with percutaneous intervention.
- Radiologic and endoscopic findings were suggestive but not definitive for ARP.
Findings:
- Percutaneous biopsy provided definitive tissue diagnosis in all three cases.
- Histopathology confirmed the presence of aberrant renal papillae, excluding malignancy.
Implications:
- This highlights the importance of percutaneous biopsy for accurate diagnosis of caliceal filling defects.
- Histological confirmation is essential to rule out low-grade urothelial malignancy when ARP is suspected.