Figure 1From: Distinguishing benign from malignant adrenal masses(a) Unenhanced images show a right adrenal mass (arrow) with a density measurement of 9 HU. This is typical for a lipid-rich adenoma. (b) Unenhanced images show a left adrenal mass (arrow) which measures 28 HU. This was a proven metastasis on subsequent biopsy.Back to article page