Adrenal Myelolipoma

Myelolipoma is a rare tumour composed of mature fat cells admixed with haemopoetic cells. They typically arise in the adrenal gland but rarely may be extra-adrenal (retroperitoneal or intrathoracic). Spontaneous haemorrhage may occur if they are large. On CT the mass is predominantly of fat density with interspersed strands of soft tissue. The differential diagnosis is a liposarcoma.
Reference: Dahnert W. Radiology Review Manual, 5th edition. Lippincott, Williams and Wilkins 2003
Credit: Dr Donna D'Souza
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