title: Extrarenal rhabdoid tumor mimicking a sacral peripheral nerve sheath tumor.
abstract: Extrarenal rhabdoid tumor is a rare, highly aggressive tumor of childhood with a poor prognosis. It represents <1% of pediatric soft tissue malignancies, typically involving infants . Frequently involved extrarenal sites include deep locations of the neck, abdomen, and paraspinal regions. The presence of "rhabdoid" cells is the characteristic histologic feature. Recent discovery of a specific genetic mutation enables a more accurate diagnosis. We present a case in an adolescent of extrarenal rhabdoid tumor arising within the sacral canal. This appears to be the first reported case of an extrarenal rhabdoid tumor arising within the sacral canal and mimicking a peripheral nerve sheath tumor. While rare, this tumor can be included in the radiologic differential diagnosis of peripheral nerve sheath tumors in children.
authors.affiliation: Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, 1161 Medical Center Dr, MCN CCC-1106, Nashville, TN 37232-2675, USA. matthew.dobbs@vanderbilt.edu
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Dobbs
authors.forename: Hernan
authors.initials: H
authors.lastname: Correa
authors.forename: Herbert S
authors.initials: HS
authors.lastname: Schwartz
authors.forename: J Herman
authors.initials: JH
authors.lastname: Kan
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D018317:Nerve Sheath Neoplasms / Q000473:pathology*; D018335:Rhabdoid Tumor / Q000175:diagnosis* / Q000473:pathology; D012447:Sacrum / Q000473:pathology*; D014057:Tomography, X-Ray Computed