Giant intra-adrenal myelolipoma associated with recurrent urinary tract infection.

Adrenal myelolipomas are rare benign tumours that may be identified on routine imaging studies. The association of myelolipomas with obesity, hypertension and malignant tumours has been reported. We describe a giant intra-adrenal myelolipoma in a 40-year-old woman that is the largest asymptomatic tumour of this type documented in the past 10 years. To avoid unnecessary and extensive treatment, the distinction of benign from malignant adrenal tumours or extra-medullary haematopoietic tumour is important, particularly when a small, inactive adrenal mass is found incidentally.