Table of Contents Author Guidelines Submit a Manuscript
TheScientificWorldJOURNAL
Volume 6, Pages 615-618
http://dx.doi.org/10.1100/tsw.2006.115
Case Study

Benign Mixed Epithelial and Stromal Tumor of the Kidney

1Department of Pathology, Hacettepe University School of Medicine, Ankara, Turkey
2Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
3Department of Pathology, Yeditepe University School of Medicine, Istanbul, Turkey
4Department of Urology, Maltepe University School of Medicine, Istanbul, Turkey

Received 14 March 2006; Accepted 3 May 2006

Academic Editor: Jill Lacy

Copyright © 2006 A. Işin Doğan Ekici et al.

Abstract

A 51-year-old, perimenopausal, female patient with 1-month history of right flank pain who was diagnosed with a renal mass and underwent nephron-sparing partial nephrectomy is presented. The renal mass was found to be a benign, biphasic tumor composed of an epithelial component, consisting of ducts of variable size scattered within a mesenchymal component, composed of spindle cells arranged in sheets and fascicles. No atypia, mitosis, or necrosis was found. The spindle component shows desmin, smooth muscle actin, and estrogen and progesterone receptor positivity immunohistochemically. The diagnosis of benign mixed epithelial and stromal tumor of the kidney is rendered. No recurrent disease has been detected during 2 years of follow up.