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Updated: May 31, 2026

Murine Bilateral Renal Lymphadenectomy

Murine Bilateral Renal Lymphadenectomy

Published on: December 30, 2025

Bilateral renal sinus myelolipomas.

Ashley Cox¹, Saul L Offman, Jennifer L O Merrimen

¹Department of Urology, Dalhousie University, Halifax, NS;

Canadian Urological Association Journal = Journal De L'Association Des Urologues Du Canada

|July 14, 2011

Summary

This summary is machine-generated.

Extra-adrenal myelolipomas (EM) are rare benign tumors. This report details the first documented instance of bilateral EM in the renal sinus, highlighting diagnostic and management challenges.

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Area of Science:

Oncology
Pathology
Radiology

Background:

Adrenal myelolipomas are benign neoplasms composed of hematopoietic cells and adipose tissue.
Extra-adrenal myelolipomas (EM) are exceptionally rare, with fewer than 50 cases reported globally.
Diagnosis can be challenging, especially when located in the renal sinus, often requiring biopsy for confirmation.

Purpose of the Study:

To report the first case of bilateral extra-adrenal myelolipomas in the renal sinus.
To discuss the diagnostic difficulties associated with renal sinus myelolipomas.
To review management strategies for these rare tumors.

Main Methods:

Case report presentation.
Review of relevant medical literature.
Discussion of diagnostic imaging and biopsy findings.
Analysis of management options.

Main Results:

The first documented case of bilateral extra-adrenal myelolipomas originating from the renal sinus is described.
Imaging features alone were insufficient for a definitive diagnosis.
Biopsy results were also inconclusive initially.
Management decisions were based on clinical progression and diagnostic certainty.

Conclusions:

Bilateral extra-adrenal myelolipomas in the renal sinus are exceedingly rare.
Accurate diagnosis of renal sinus myelolipomas can be challenging, necessitating a combination of imaging and histopathology.
Management should be individualized, considering clinical factors and tumor characteristics.