title: Chondroblastoma: an unusual cause of knee pain in the adolescent.
abstract: Chondroblastoma is a rare, benign bone tumor that may mimic an orthopedic infection. Characteristic clinical features include specific radiographic findings, predilection for the adolescent age group, and long bone epiphyseal involvement. This case of chondroblastoma is unusual because of aggressive findings on radiographic studies which underscore the need to obtain hip radiographs on adolescent patients with knee pain.
authors.affiliation: Department of Pediatrics, University of California at Los Angeles Children's Hospital, 90095-1752, USA.
authors.forename: R M
authors.initials: RM
authors.lastname: Nishihara
authors.forename: C S
authors.initials: CS
authors.lastname: Helmstedter
mesh_terms: D000293:Adolescent; D001706:Biopsy; D002804:Chondroblastoma / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D005266:Femoral Neoplasms / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D005270:Femur Head; D006801:Humans; D007717:Knee; D008279:Magnetic Resonance Imaging; D008297:Male; D010146:Pain / Q000209:etiology*; D014057:Tomography, X-Ray Computed