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Updated: Apr 26, 2026

Murine Bilateral Renal Lymphadenectomy
Published on: December 30, 2025
Perirenal extra-adrenal myelolipoma
Ali Hajiran1, Chad Morley1, Robert Jansen1
1Ali Hajiran, Chad Morley, Robert Jansen, Stanley Kandzari, Patrick Bacaj, Stanley Zaslau, Jon Cardinal, Division of Urology, West Virginia University, Morgantown, WV 26505, United States.
Abstract:
Myelolipomas are rare tumors consisting of both adipose and hematopoietic tissue and are typically found within the adrenal gland. Extra-adrenal involvement is rare, especially those tumors involving the perirenal space and collecting system. We report a case of a patient with an incidentally discovered perirenal mass that was initially concerning for a retroperitoneal liposarcoma. Following surgical resection and pathological analysis, the lesion was found to be an extra-adrenal myelolipoma. This case report and review of the literature demonstrates the importance of the proper work-up and management of perirenal lipoma variants while addressing the issues of tissue biopsy, surgical intervention, and pre- and post-operative surveillance.
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