title: The osteosarcoma amputation stump: a clinico-radiographical correlation.
abstract: The radiological picture of the amputation stump after osteosarcoma was reviewed in 75 cases, in which postoperative follow-up ranged from a minimum four months, to a maximum of over 12 years. In 67/75 cases (89%) no recurrence was observed; in 8/75 cases (11%) a local neoplastic recurrency was confirmed on clinical and histopathological grounds. The usual aspects of late modifications induced by surgery include osteoporosis of the residual bone, which may assume a geographical pattern, with thinning of the stump apex and formation of a periosteal spur directed towards the soft tissues. The typical pattern of locally recurrent osteosarcoma is that of an infiltrating soft tissue mass with bone erosion and irregular flake-like calcifications. All these signs are presented and discussed in order to give a practical guideline to the differential diagnosis between surgery-induced modifications and local neoplastic recurrences.
authors.forename: R
authors.initials: R
authors.lastname: Nessi
authors.forename: P
authors.initials: P
authors.lastname: Del Bò
authors.forename: L
authors.initials: L
authors.lastname: De Flaviis
authors.forename: L
authors.initials: L
authors.lastname: Balzarini
mesh_terms: D000293:Adolescent; D000328:Adult; D000671:Amputation, Surgical; D000672:Amputation Stumps / Q000000981:diagnostic imaging*; D001859:Bone Neoplasms / Q000601:surgery*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging*; D012516:Osteosarcoma / Q000601:surgery*; D011859:Radiography