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Updated: Aug 12, 2026

Laparoscopic Technique for Serial Collection of Liver and Mesenteric Lymph Nodes in Macaques
Published on: May 2, 2017
Fine needle aspiration diagnosis of a mesenteric myelolipoma: a case report
J A Bryan1, C H Sykes, D F Garvin
1Department of Pathology, Georgetown University Medical Center, Washington, DC, USA.
Background:
Extraadrenal myelolipomas are very rare tumors, with a characteristic, though nonspecific, radiologic appearance. Tissue sampling is necessary for diagnosis, and although most of these tumors are asymptomatic, surgical excision is often indicated.
Case:
A 59-year-old male was found to have a large mass within the mesentery of the abdomen, incidentally discovered during an ultrasound examination for renal lithiasis. Computed tomography-guided fine needle aspiration biopsy yielded mature adipose tissue admixed with hematopoietic elements.
Conclusion:
FNA proved to be a rapid and effective modality for the diagnosis of this distinctly uncommon tumor.

