Adrenal Heterotopia in the Middle Zone of the Kidney Resembling Renal Cell Carcinoma: A Case Report

A 49-year-old male was found to have two left renal masses suspicious for renal cell carcinoma during routine imaging for bilateral adrenal adenomas.The patient underwent unilateral synchronous multifocal partial nephrectomy.Pathology diagnosed a 1.7 cm upper pole lesion as a clear cell papillary tumor, while a 1.9 cm solid mass in the middle zone, was diagnosed as adrenal heterotopia.Although rare, ectopic adrenal tissue can occur in the kidney and should be considered in the differential diagnosis of renal cell cancer.Ectopic adrenal tissue should also be considered when conducting hormonal evaluation to avoid unnecessary adrenalectomy.