Mixed epithelial and stromal tumor of the kidney: A case report in elderly male patient.

Mixed epithelial and stromal tumor (MEST) is very rare neoplasm of the kidney, commonly affecting women at menopausal age. MEST is usually considered a benign tumor with low risk of local recurrence or distance metastases. Our case presents a case of a 66 years old male patient with a complex cystic lesion of the left kidney incidentally diagnosed on urinary tract computerized scan (CT) performed for other reasons. The patient underwent a radical nephrectomy. The pathology report came back as MEST of the kidney. The present case report highlights the asymptomatic presentation of MEST as a benign renal masses.