title: Quiz. Histopathological diagnosis was exostosis with nonunion secondary to probable fracture.
authors.affiliation: Divisione di Ortopedia e Traumatologia Pediatrica, Istituto Ortopedico Rizzoli, Bologna.
authors.forename: G L
authors.initials: GL
authors.lastname: Di Gennaro
authors.forename: R
authors.initials: R
authors.lastname: Libri
authors.forename: S
authors.initials: S
authors.lastname: Stilli
authors.forename: R
authors.initials: R
authors.lastname: Pascarella
authors.forename: L
authors.initials: L
authors.lastname: Marchiodi
mesh_terms: D001859:Bone Neoplasms / Q000150:complications / Q000473:pathology*; D002111:Calcaneus; D002648:Child; D005599:Fractures, Ununited / Q000150:complications / Q000473:pathology*; D006801:Humans; D008297:Male; D015831:Osteochondroma / Q000150:complications / Q000473:pathology*