Cortical and Periosteal Lesions


Cortical and periosteal lesions of the hand may be caused by a variety of disorders, such as epidermoid cyst, osteochondroma, osteoid osteoma, osteoporosis, periosteal enchondroma, periostitis ossificans, and renal osteodystrophy. Epidermoid cysts may be traumatic or iatrogenic, and affect the distal phalanges. Osteochondromas may be single or multiple, and are seen as pedunculated bony outgrowths. Osteoid osteomas classically present with focal bone pain, and have prominent adjacent cortical and endosteal sclerosis on radiographs. Periosteal enchondromas are a variant of enchondromas that arise at the bone surface. Periostitis ossificans encompasses a group of reparative and injury-related lesions of periosteum unassociated with bone fracture. Subperiosteal resorption is considered to be a pathognomonic feature of hyperparathyroidism, with renal osteodystrophy being the most common cause of secondary hyperparathyroidism.


Osteoid Osteoma Epidermoid Cyst Periosteal Reaction Renal Osteodystrophy Distal Phalange 
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© Springer-Verlag Berlin Heidelberg 2009

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