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Recurrent renal epithelioid angiomyolipoma
Albert Ong1, Peter Pinto, Fernando Kim
1James Buchanan Brady Urological Institute, Johns Hopkins Medical Institutions, Baltimore, Maryland 21287-2101, USA.
Urology
|May 9, 2003
Summary
Renal angiomyolipomas are usually benign, but some epithelioid types show malignant potential. This case highlights a rare adrenal recurrence of a cellular angiomyolipoma four years post-surgery.
Area of Science:
- Oncology
- Urology
- Pathology
Background:
- Renal angiomyolipomas (AMLs) are typically benign mesenchymal tumors.
- Epithelioid variants of AMLs are increasingly recognized for their potential malignant behavior.
- The traditional classification of AMLs as exclusively benign is being challenged by emerging evidence.
Observation:
- A patient previously treated for a cellular renal angiomyolipoma experienced a recurrence.
- The recurrence manifested as a mass in the adrenal gland.
- The initial tumor was surgically removed four years prior to the adrenal recurrence.
Findings:
- This case demonstrates late adrenal metastasis from a renal angiomyolipoma.
- The cellular nature of the initial tumor may be associated with increased risk of recurrence or metastasis.
- The findings suggest that even tumors traditionally considered benign require long-term surveillance.
Implications:
- The potential for malignant behavior in epithelioid angiomyolipomas necessitates careful histopathological evaluation.
- Adrenal recurrence highlights the importance of considering metastatic potential in AMLs.
- Enhanced surveillance protocols may be warranted for patients with cellular or epithelioid angiomyolipomas.