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Dysplasia epiphysealis hemimelica

“ Very rare autosomal dominant disease, also known as Trevor disease, it is an osteochondroma arising from an epiphysis. It presents in you...

Very rare autosomal dominant disease, also known as Trevor disease, it is an osteochondroma arising from an epiphysis. It presents in young children (up to 4 years of age) due to gait disturbance.
Plain film

•  Premature appearance of an ossification centre that is enlarged, asymmetrical and contains stippled calcification.
•  Physis may close early and the lesion then appears like any other exostosis.
•  Usually affects multiple epiphyses in the same limb, most commonly the ankle region.
•  Often restricted to either the medial or lateral side of the limb (hence hemimelic).