title: Spontaneous regression of lung metastasis from osteosarcoma: a case report.
abstract: A case of spontaneous regression of a pulmonary metastasis from high-grade osteosarcoma is reported. The metastasis developed 5 years after chemotherapy and amputation for a distal femur osteosarcoma. The sarcomatous nature of the lesion was histologically confirmed. No treatment was attempted owing to the patient's refusal. The patient was followed up every 3 months and a spontaneous regression of the lesion was documented. Seven years after the diagnosis of lung metastases, no pulmonary nodules or other signs of relapse are present.
authors.affiliation: Division of Chemotherapy, Istituto Ortopedico Rizzoli, Bologna, Italy. gaetano.bacci@ior.it
authors.forename: Gaetano
authors.initials: G
authors.lastname: Bacci
authors.forename: Emanuela
authors.initials: E
authors.lastname: Palmerini
authors.forename: Eric L
authors.initials: EL
authors.lastname: Staals
authors.forename: Stefano
authors.initials: S
authors.lastname: Ferrari
authors.forename: Milva
authors.initials: M
authors.lastname: Battaglia
authors.forename: Alessandra
authors.initials: A
authors.lastname: Longhi
authors.forename: Franco
authors.initials: F
authors.lastname: Bertoni
authors.forename: Antonio
authors.initials: A
authors.lastname: Briccoli
mesh_terms: D000328:Adult; D005266:Femoral Neoplasms / Q000473:pathology* / Q000628:therapy; D005500:Follow-Up Studies; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology* / Q000556:secondary / Q000628:therapy; D008297:Male; D009362:Neoplasm Metastasis; D009365:Neoplasm Regression, Spontaneous / Q000473:pathology*; D012516:Osteosarcoma / Q000473:pathology* / Q000628:therapy