Bilateral Giant Adrenal Myelolipomas: a case report and literature review

Adrenal myelolipoma is a rare benign adrenal neoplasm presenting in 0.08%-0.4% of population based on autopsy series. It is of adrenal origin composed of mature adipose tissue and a variable amount of hematopoietic elements (myeloid and erythroid cells). Most patients are asymptomatic, and the lesion is discovered incidentally at autopsy or on imaging studies performed for other reasons. Most tumors are unilateral and small in size (< 5cm). The case of symptomatic bilateral giant adrenal myelolipomas is extremely rare. We report a case of bilateral giant adrenal myelolipoma in a 56-year-old male presenting w ith gradual ly abdom i na l d i s tent ion for 6 months. We present characteristic CT finding in this patient with review of literatures. Myelolipoma is a relatively rare benign tumor composed of fatty tissue and bone marrow elements. It is frequently arised from the adrenal glands but may exist as a solitary mass elsewhere. Adrenal myelolipomas are typically small in size (<5cm), nonfunctioning and asymptomatic. They are most often discovered incidentally [1]. We report a case of bilateral giant myelolipoma with presentation of gradually abdominal distention for 6 months.