title: A calcaneal osteochondroma with recurrence in a skeletally mature patient: a case report.
abstract: BACKGROUND
  Osteochondroma is the most common benign tumor of the skeleton. However, calcaneal osteochondroma is very rare. Osteochondromas grow during childhood through adolescence, but usually growing ends when the epiphyseal plates close. In an adult, growth of an osteochondroma suggests the diagnosis of malignant transformation to a chondrosarcoma. However, enlargement of an osteochondroma reported as benign after skeletal maturity is present in literature.
  
  
  METHODS
  We report the clinical and radiologic findings of a calcaneal osteochondroma with an extremely rare placement and painfull, rapid reccurence following surgical excision in a skeletally mature female. The lesion showed growth the first-operation later and was re-operated. Histopathological examination did not show malignancy.
  
  
  CONCLUSIONS
  It should kept in mind that benign osteochondromas can show symptomatic growth in skeletally mature patients without malignant transformation.
authors.affiliation: 1 Department of Radiology, Medical Faculty, Dumlupinar University, Kutahya, Turkey. koplaymustafa@hotmail.com
authors.forename: Mustafa
authors.initials: M
authors.lastname: Koplay
authors.forename: Serdar
authors.initials: S
authors.lastname: Toker
authors.forename: Levent
authors.initials: L
authors.lastname: Sahin
authors.forename: Volkan
authors.initials: V
authors.lastname: Kilincoglu