Renal Metastasis of a Malignant Myopericytoma: A Case Report and Review of Literature

*Jeroen Van Besien,1 Pieter Uvin,1 Caroline Van den Broecke,2 David Creytens,3 Luc Merckx1

1. Department of Urology, AZ Sint Lucas, Ghent, Belgium
2. Department of Pathology, AZ Sint Lucas, Ghent, Belgium
3. Department of Pathology, Ghent University Hospital, Ghent, Belgium
*Correspondence to jeroen.vanbesien@gmail.com

Disclosure: The authors have declared no conflicts of interest.
Received: 03.11.15 Accepted: 02.02.16
Citation: EMJ Urol. 2016;4[1]:82-87.

Abstract

Myopericytoma is a rare tumour arising from myopericytes. Myopericytes are transitional cells between pericytes, which are perivascular cells adjacent to capillaries, and vascular smooth muscle cells. We report a case of cutaneous myopericytoma metastasising to the right kidney. It represents one of the few cases of malignant behaviour in myopericytoma, and is the first report of a myopericytoma metastasising to the urinary tract. This case suggests that the traditional view that urinary myopericytoma are benign lesions needs to be updated.

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