Kidney tumor
Benign adult tumors

Topic Completed: 1 January 2012

Minor changes: 25 February 2021

Copyright: 2003-2021,, Inc.

PubMed Search: Hemangioma kidney [title]

Mandolin S. Ziadie, M.D.
Page views in 2020: 862
Page views in 2021 to date: 490
Cite this page: Ziadie MS. Hemangioma. website. Accessed May 15th, 2021.
Definition / general
  • Benign vascular lesion similar to that seen in soft tissue
  • May be capillary, cavernous or mixed
  • May clinically / radiologically resemble cystic renal cell carcinoma (Int J Clin Oncol 2008;13:166)
  • Usually asymptomatic but may cause recurrent hemorrhage / hematuria
  • May be associated with vascular malformation syndromes including Klippel-Trenaunay and Sturge-Weber
Case reports
Gross description
  • Small (may be difficult to find) reddish blue tumor in medulla / cortex / capsule
  • Usually at tips of papillae; 10% are multiple
Microscopic (histologic) description
  • Proliferation of small or large anastamosing vessels with benign endothelium
  • Mitoses may be present but are not atypical
  • Cavernous type is most common
Microscopic (histologic) images

AFIP images

Renal hemangioma

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Mixed capillary cavernous hemangioma

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