Primary extraosseous ewing sarcoma of the kidney with level III inferior vena cava thrombus
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Updated: Jun 19, 2026

In Vivo Model for Testing Effect of Hypoxia on Tumor Metastasis
Published on: December 9, 2016
Amr F Fergany1, Nivedita Dhar, G Thomas Budd
1The Glickman Urological Institute, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA. fergana@ccf.org
Abstract:
Ewing sarcoma typically presents as a skeletal-based tumor, with rare instances of peripheral primitive neuroectodermal tumor (PNET) arising in the soft tissues. Few examples of organ-based PNETs have been previously described in the literature. These tumors are exceedingly rare as a primary renal neoplasm. To our knowledge, this is the first report documenting a primary extraskeletal Ewing sarcoma of the kidney with thrombus extending into the intrahepatic inferior vena cava thrombus (level III).
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