Technetium-99m sulfur colloid scintigraphy can be useful in evaluating extraadrenal myelolipomas, which may simulate other fat-containing lesions on cross-sectional imaging.
May aid differentiation of extraadrenal myelolipoma; leaves open need for prospective validation before clinical adoption.
Myelolipoma is a rare hormonally inactive, benign tumor composed of mature adipose tissue and hematopoietic cells. It frequently involves the adrenal gland but could be located away from this organ in the thorax, retroperitoneum, or presacral region. The extraadrenal lesion may simulate other fat-containing benign or malignant lesions on cross-sectional imaging. The author presents a case of a large left retroperitoneal mass with positive technetium-99m sulfur colloid scintigraphic uptake and histologic evidence of extraadrenal myelolipoma.
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Ba D. Nguyen (2007) studied this question.
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