title: Diagnosis and management of malignant perirenal schwannoma.
abstract: Malignant retroperitoneal schwannoma is an extremely rare tumor, with only six cases previously reported occurring in the perirenal space. We herein report the seventh case. A 50-year-old woman presented with an abdominal mass suggestive of renal cell carcinoma by standard preoperative evaluation. The tumor required surgical exploration and pathologic evaluation for diagnosis. The final histologic diagnosis was made with the aid of electron microscopy and immunohistochemical staining with antibodies for S-100 protein.
authors.affiliation: Department of Urology, Robert Wood Johnson Medical School, New Brunswick, New Jersey 08903, USA.
authors.forename: A J
authors.initials: AJ
authors.lastname: Pantuck
authors.forename: J G
authors.initials: JG
authors.lastname: Barone
authors.forename: P S
authors.initials: PS
authors.lastname: Amenta
authors.forename: P C
authors.initials: PC
authors.lastname: Smilow
authors.forename: K B
authors.initials: KB
authors.lastname: Cummings
mesh_terms: D001485:Basement Membrane / Q000648:ultrastructure; D003131:Combined Modality Therapy; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000628:therapy / Q000648:ultrastructure; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000601:surgery; D009442:Neurilemmoma / Q000175:diagnosis* / Q000628:therapy / Q000648:ultrastructure; D012086:Reoperation; D012187:Retroperitoneal Space; D009418:S100 Proteins / Q000032:analysis
chemical_list: D009418:S100 Proteins