Renal medullary fibroma

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Renal medullary fibroma
Other names: Renomedullary interstitial cell tumou, medullary fibroma'
Micrograph of a renal medullary fibroma (bottom of image). Renal tubules are seen at the top of the image. H&E stain.

Renal medullary fibroma is a benign kidney tumour. It is commonly an incidental finding.[1]

Signs and symptoms

Renal medullary fibromas are typically asymptomatic.


Renal medullary fibromas are diagnosed by pathologists based on the examination of tissue.

They consist of bland spindle-shaped or stellate-shaped cells in a loose stroma. Renal tubules may be entrapped.


Generally, no treatment is required.

See also


  1. Tsurukawa, H.; Iuchi, H.; Osanai, H.; Yamaguchi, S.; Hashimoto, H.; Kaneko, S.; Yachiku, S. (Jan 2000). "[Renomedullary interstitial cell tumor: a case report]". Nihon Hinyokika Gakkai Zasshi. 91 (1): 37–40. PMID 10689882.

Further reading