title: [An innocent bone cyst in the proximal humerus].
abstract: We discuss four cases of bone cyst in the proximal humerus, in two boys aged 8 and 9, and two girls aged 2 and 5. Differentiation between a solitary and an aneurysmatic bone cyst can be difficult. The bone cyst in the proximal humerus is mostly benign. In one case (the 2-year-old girl) a malignancy, a telangiectatic osteosarcoma, was observed after 2-5 years follow-up. Humerus resection was performed.
authors.affiliation: Sophia Ziekenhuis, afd. Orthopedie, Zwolle.
authors.forename: J J
authors.initials: JJ
authors.lastname: Rondhuis
authors.forename: P I
authors.initials: PI
authors.lastname: Wuisman
mesh_terms: D001845:Bone Cysts / Q000000981:diagnostic imaging / Q000601:surgery*; D001859:Bone Neoplasms / Q000473:pathology; D002471:Cell Transformation, Neoplastic; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006811:Humerus / Q000000981:diagnostic imaging; D008297:Male; D012516:Osteosarcoma / Q000473:pathology; D011859:Radiography
vernacular_title: Een onschuldige botcyste in de proximale humerus.