Kidney tumor
Sarcoma of kidney

Topic Completed: 1 July 2012

Revised: 20 August 2019

Copyright: 2003-2019,, Inc.

PubMed Search: "renal sarcoma" kidney

Sean R. Williamson, M.D.
Page views in 2018: 1,005
Page views in 2019 to date: 858
Cite this page: Williamson SR. Sarcoma of kidney. website. Accessed September 19th, 2019.
Definition / general
Case reports
Gross description
  • Clear cell sarcoma commonly arises from medullar (Acta Radiol 2011;52:448)
  • Leiomyosarcoma commonly arises from capsule with "buckling" of cortex
  • Osteosarcoma may have dense ossification, though many are indistinguishable from RCC by imaging (Radiographics 2010;30:1525)
  • Solitary fibrous tumor commonly arises from renal sinus
Microscopic (histologic) images

AFIP images

Many multinucleated giant cells

Osteosarcoma: abundant osteoid is produced

Images hosted on other servers:

Fig 1: CT scan shows large solid mass with central, nonenhancing area;
Fig 2: large, well circumscribed, yellow, fleshy tumor with hemorrhage and necrosis;
Fig 3: short fascicles in cartwheel pattern of plump spindle cells;
Fig 4: hemangiopericytoma-like vessels

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