title: Mixed epithelial stromal renal tumor with dystrophic ossification: a case report and literature review.
abstract: A 25-year-old female presented with worsening right flank pain and a 9 year history of a slow growing 4 centimeter calcified renal mass. The lesion was resected by laparoscopic partial nephrectomy revealing a mixed epithelial and stromal tumor (MEST). This tumor has unusual features including the extensive amount of dystrophic calcification and the young age at presentation. Herein, we present a focused review of the literature regarding MESTs, as well as a discussion of calcified renal mass management. We conclude that laparoscopy may be utilized to safely perform nephron sparing surgery for select, calcified renal masses.
authors.affiliation: Section of Urology, University of Chicago Medical Center, Chicago, IL 60637, USA.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Large
authors.forename: Hikmat
authors.initials: H
authors.lastname: Al-Ahmadie
authors.forename: Arieh L
authors.initials: AL
authors.lastname: Shalhav
authors.forename: Kevin C
authors.initials: KC
authors.lastname: Zorn
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D010535:Laparoscopy; D009375:Neoplasms, Glandular and Epithelial / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D009392:Nephrectomy / Q000379:methods*; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed