title: Giant costal osteochondroma in a man with multiple exostoses.
abstract: We report the case of a 42-year-old man who presented with kyphosis resulting from a giant symptomatic costal osteochondroma around the left fourth rib. The osteochondroma on the left side of the back was 56 cm × 47 cm × 33 cm and was painful. The size and growth of the tumor suggested a malignant transformation of a large costal osteochondroma. Multiple osteochondromas were also found on the legs. The patient's family history revealed hereditary characteristics. This patient was clinically diagnosed as a case of multiple familial osteochondromatosis. Complete removal of the tumor relieved the symptoms, and histopathologic examination confirmed malignant transformation of chondrosarcoma. There was no recurrence after 16 months of follow-up.
authors.forename: Wenliang
authors.initials: W
authors.lastname: Liu
authors.forename: Demiao
authors.initials: D
authors.lastname: Kong
authors.forename: Jingqun
authors.initials: J
authors.lastname: Tang
authors.forename: Fenglei
authors.initials: F
authors.lastname: Yu
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000150:complications* / Q000473:pathology; D005097:Exostoses, Multiple Hereditary / Q000150:complications*; D006801:Humans; D008297:Male; D015831:Osteochondroma / Q000150:complications* / Q000473:pathology; D012272:Ribs
keywords: 5