The Journal of Bone and Joint Surgery 78:911-5 (1996)
© 1996 The Journal of Bone and Joint Surgery, Inc.
Solitary Bone Cyst with Epiphyseal Involvement: Confirmation with Magnetic Resonance Imaging. A Case Report and Review of the Literature*
ANIL K. GUPTA, M.B., B.S., M.S.(ORTH.) and
ALVIN H. CRAWFORD, M.D. , CINCINNATI, OHIO
Investigation performed at Children's Hospital Medical Center, Cincinnati
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Introduction
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Documented epiphyseal extension of a solitary unicameral bone cyst in the presence of an open physis is extremely rare3,15. Epiphyseal extension by such cysts has been noted on plain radiographs3, on computed tomography15, and intraoperatively10. We report an unusual case of a skeletally immature child in whom magnetic resonance imaging clearly demonstrated extension of a solitary bone cyst into the proximal humeral epiphysis. The portions of the cyst in the epiphysis and metaphysis communicated through a defect in the physis that was probably due to erosion by the cyst. Progressive limb-shortening developed. The purpose of the current report is to describe the natural history and pathogenesis of physeal involvement by a unicameral bone cyst.
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Case Report
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A fourteen-year-old boy was seen in the emergency room of the Children's Hospital Medical Center in Cincinnati with a history of a twisting injury of the right arm. He had been managed . . . [Full Text of this Article]

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