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Myelolipoma - cut surface
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Myelolipoma - cut surface

The specimen demonstrates the cut surface of a myelo-lipoma.
Note the tan color tinged with yellow.
The yellow color is due to the neoplastic fat cells (the lipoma portion).
The tan color is due to the marrow elements ("myelo" portion).
(Description By:T. V. Rajan, M.D. )
(Image Contrib. by:Hartford Hospital Hartford Hospital )
Myelolipoma
Etiology

Unknown
Pathogenesis

Probably hamartomas rather than true neoplasms.,
Epidemiology

Rare.
General Gross Description

Tumors are round, firm, yellowish to red lesions.
Usually well demarcated and separated from surrounding tissue by a capsule.
Usually seen in the adrenal gland.
General Microscopic Description

Histologically, composed of normal, adult, mature adipocytes admixed with bone marrow elements.
Clinical Correlation

Rare tumors, usually small and asymptomatic.
Usually detected at autopsy.
Occasionally, they become large.
Large, intra-abdominal lesions can cause nausea and/or constipation.
References

Enzinger, F.M. and Weiss, S.W. Soft tissue tumors. 2nd Edition. St.Louis: Mosby, 1988. pp 323.
Myelolipoma
Synopsis by: T.V. Rajan M.D. Ph.D. (T1X000M88700)[98]
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