Renal-adrenal fusion: instance of an adrenal adenoma mimicking a solid renal mass at CT--case report.

The authors report an unusual case of unilateral renal-adrenal fusion with a concurrent adrenal adenoma. At computed tomography, this abnormality appeared as a solid enhancing lesion in the upper pole of the kidney, mimicking a renal mass. The ambiguous characteristics of this lesion at cross-sectional imaging, along with alternative diagnostic possibilities, are discussed.