1. Recurrent Adult Intraabdominal Undifferentiated High-Grade Pleomorphic Sarcoma Infiltrated the Descending Colon: a Case Report and Review of the Literature
   Xu Ziwei et al, 2018, J Gastrointest Canc CrossRef
2. Magnetic Resonance Imaging of the Perirenal Space and Retroperitoneum
   Jorge Elias et al, 2018, Magnetic Resonance Imaging Clinics of North America CrossRef
3. A rare case of primary malignant fibrous histiocytoma: a sarcoma of the kidney
   Forough Ebrahimtabar et al, 2019, BMC Urol CrossRef