Diffuse abdominal pain. History of left nephrectomy at the age of 8 months for renal tumor (pathological report not available).
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There is a well-defined ovoid hypodense right adrenal mass measuring 47 x 45 x 34 mm with no calcification, necrosis or hemorrhage. The attenuation value on non-contrast images was -10 HU.
On non-contrast CT scan an attenuation value of an adrenal lesion < 0 HU as in this case is considered 47% sensitive and 100% specific for a lipid-rich adrenal adenoma.