title: Collision tumors in children: a review of the literature and presentation of a rare case of mesoblastic nephroma and neuroblastoma in an infant.
abstract: A mass made up of 2 distinct synchronous primary malignant tumors is a rare event in adults, and exceedingly so in children. Such lesions have been called collision tumors. Reported here is an infant who was found to have a collision tumor comprised of a neuroblastoma and a congenital mesoblastic nephroma, in contiguity, in the right kidney. This is the first report of a collision tumor in an infant. This also is the first report of a synchronous occurrence of a neuroblastoma and a congenital mesoblastic nephroma. The authors present this case and discuss the available literature.
authors.affiliation: Department of Surgery, Children's Hospital, Columbus, OH 43205, USA.
authors.forename: R K
authors.initials: RK
authors.lastname: Vegunta
authors.forename: R A
authors.initials: RA
authors.lastname: Morotti
authors.forename: W E
authors.initials: WE
authors.lastname: Shiels
authors.forename: A
authors.initials: A
authors.lastname: Rauck
authors.forename: G E
authors.initials: GE
authors.lastname: Besner
mesh_terms: D005260:Female; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D009378:Neoplasms, Multiple Primary / Q000473:pathology / Q000601:surgery; D009392:Nephrectomy; D018201:Nephroma, Mesoblastic / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D009447:Neuroblastoma / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed