Kidney tumor

Childhood tumors

Ossifying renal tumor of infancy



Topic Completed: 1 December 2011

Minor changes: 24 February 2021

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PubMed Search: ossifying renal tumor [title]

Mandolin S. Ziadie, M.D.
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Cite this page: Ziadie MS. Ossifying renal tumor of infancy. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/kidneytumorossifying.html. Accessed December 8th, 2021.
Definition / general
  • Rare
  • Calcified mass in renal pelvis composed of spindle cells in partially calcified osteoid matrix
Clinical features
  • Presents as gross hematuria or abdominal mass; benign behavior
Case reports
Gross description
  • 2 - 3 cm polypoid lesion in renal pelvis / collecting system
Microscopic (histologic) description
  • Osteoid core surrounded by osteoblasts and spindle cells with focal osteoid matrix
Microscopic (histologic) images

AFIP images

Spindle cells with focal osteoid matrix; osteoid core



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Ossifying renal tumor

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