OBJECTIVE To report two new cases of Ewing's sarcoma/primitive neuroectodermal tumor of the kidney, one of them with tumor thrombus in cava. METHOD Characterization of two new cases and literature review by PubMed search. RESULTS We report the cases of two men diagnosed with primary renal Ewing's sarcoma, who have been treated with nephrectomy and adjuvant chemotherapy, being in complete ...

BACKGROUND Primary renal primitive neuroectodermal tumor/extraskeletal Ewing's sarcoma (PNET/EES) is a very rare renal tumor. CASE REPORT We report a case of primary renal PNET/EES of the kidney in an adult patient and describe its computed tomography and magnetic resonance imaging findings, including diffusion weighted images along with a review of the current medical literature. CONCLUSIO...

BACKGROUND Ewing's sarcoma and primitive neuroectodermal tumor of bone are closely related, highly malignant tumors of children, adolescents, and young adults. A new drug combination, ifosfamide and etoposide, was highly effective in patients with Ewing's sarcoma or primitive neuroectodermal tumor of bone who had a relapse after standard therapy. We designed a study to test whether the addition...