title: Epiphyseal extension of a unicameral bone cyst.
abstract: Epiphyseal extension of a unicameral bone cyst is rare. We report a case of a 13-year-old boy with three pathological fractures through a unicameral bone cyst with epiphyseal involvement in the proximal humerus. These lesions initially tends to expand the humeral epiphysis laterally and progress medially. They also commonly cause a slip of the epiphysis in a medical direction. They also have a greater association with growth retardation and lesser degree of recurrence than their metaphyseal counterpart.
authors.affiliation: Department of Pathology, St. Lukes-Roosevelt Hospital Center, New York, USA.
authors.forename: A H
authors.initials: AH
authors.lastname: Haims
authors.forename: P
authors.initials: P
authors.lastname: Desai
authors.forename: D
authors.initials: D
authors.lastname: Present
authors.forename: J
authors.initials: J
authors.lastname: Beltran
mesh_terms: D000293:Adolescent; D001706:Biopsy; D001845:Bone Cysts / Q000150:complications* / Q000175:diagnosis; D003937:Diagnosis, Differential; D004838:Epiphyses; D005598:Fractures, Spontaneous / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D006811:Humerus; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed