Benign renal tumors

Benign renal tumors are rare. They include:




 * angiomyolipoma,
 * hamartoma,
 * fibroma,
 * hemangioma,
 * leiomyoma,
 * adenoma - 3 cm in diameter,
 * oncocytoma (a type of adenoma that grows from the interstitial cells of the collecting ducts) - it has a round shape and doesn't metastasize. It is often asymptomatic. Histologically we are not able to differentiate an oncocytoma from a chromophobic renal carcinoma, therefore a nephrectomy is recommended.

Biologic behaviour of an adenoma + oncocytoma is unclear - nephrectomy is recommended.

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