Abstract
The Ewings family of tumours comprises a spectrum of malignancies of primitive neuroectodermal cells: embryonic cells that migrate from the neural crest. 1Primary kidney Ewings sarcoma is a rare neoplastic disease representing less than 1% of renal tumors and is characterized by [...]
Abstract
Renal oncocytoma account for 3 to 7% of primary renal tumors. It is usually diagnosed incidentally and typically has a benign behavior. No currently used imaging techniques can reliably distinguish it from malignant lesions. Similarly, the microscopic diagnosis of oncocytoma remains [...]