Abstract
BackgroundEnchondromas originating in the epiphyses of long bones are rare and epiphyseal osteoid osteomas are also uncommon. Diagnosis can become elusive when enchondromas or osteoid osteomas occur in atypical locations and present with nonspecific clinical and imaging characteristics.Case presentationWe report a case of epiphyseal enchondroma of the left proximal femur in a 15-year-old girl with a 2-month history of left lower extremity pain. Preoperative CT displayed thickened cortex in the anterior surface of the left proximal femur with specks of calcification and inhomogeneity of the adjacent bone marrow cavity. She was diagnosed with osteoid osteoma. Postoperative pathological examination of surgically excised specimens revealed a diagnosis of enchondromas.ConclusionsOur case highlights that enchondroma should be considered in lesions of the epiphysis.
Highlights
Enchondromas originating in the epiphyses of long bones are rare and epiphyseal osteoid osteomas are uncommon
Our case highlights that enchondroma should be considered in lesions of the epiphysis
Diagnosis can become elusive when enchondromas or osteoid osteomas occur in atypical locations and present with nonspecific clinical and imaging characteristics [6]
Summary
Enchondromas originating in the epiphyses of long bones are rare and epiphyseal osteoid osteomas are uncommon. In a study of 49 children and adolescents with long bone epiphyseal lesions, El-Ali et al found only 1 (2.0%) case of enchondroma [4]. 2 Department of Orthopedics, Hebei Provincial Chidren’s Hospital, No 133 Jianhua South Street, Chang’an District, Shijiazhuang 050000, Hebei, China Full list of author information is available at the end of the article prompt patients to seek early medical attention as epiphyseal lesions often produce pain in the absence of trauma or other physical insults [5].
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