title: Examination of prognostic factors after resection of pulmonary metastasis of osteosarcoma by multivariate analysis.
abstract: Prognostic factors for the case of pulmonary metastasis of osteosarcoma was examined using the multivariate analysis. 1) The 3-year survival rate after operation of primary focus in 23 cases was 34.8% and the 5-year survival rate was 30.4%. The 3-year survival rate after the first operation of pulmonary metastasis was 30.4% and the 5-year survival rate was 12.2%. No deaths attributed to operation were found. 2) Gender, age, histological type, solitary or multiple pulmonary metastasis, laterality, number of pulmonary metastatic tumors, TDT and DFI were examined, and the laterality, number of pulmonary metastatic tumors and DFI were considered to be useful prognostic factors. DFI among them was most closely associated with postoperative survival days. 3) A significant difference in the number of excised nodules was found between the DFI less than 90 days group and the DFI not less than 90 days group, and the number in the former group was significantly larger. 4) It was suggested that postoperative observation and close examination for pulmonary metastasis at about 3 months intervals after of primary focus are important, and also, positive or negative pulmonary metastasis as the time of examination, particularly, the number metastatic nodules of less than 5 or not less than 5, are reflected in the prognosis. 5) Expected survival time after the first operation pulmonary metastasis appeared possible to estimate as 3.0 x DFI days.
authors.affiliation: Second Department of Surgery, Osaka City University Medical School, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Inoue
authors.forename: R
authors.initials: R
authors.lastname: Yamamoto
authors.forename: N
authors.initials: N
authors.lastname: Nishiyama
authors.forename: T
authors.initials: T
authors.lastname: Hori
authors.forename: Y
authors.initials: Y
authors.lastname: Miyamoto
authors.forename: S
authors.initials: S
authors.lastname: Takehara
authors.forename: M
authors.initials: M
authors.lastname: Kaji
authors.forename: T
authors.initials: T
authors.lastname: Kin
authors.forename: T
authors.initials: T
authors.lastname: Katoh
authors.forename: T
authors.initials: T
authors.lastname: Iwata
authors.forename: T
authors.initials: T
authors.lastname: Nishida
authors.forename: H
authors.initials: H
authors.lastname: Kinoshita
mesh_terms: D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000473:pathology*; D002648:Child; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D012516:Osteosarcoma / Q000556:secondary* / Q000601:surgery*; D011379:Prognosis; D016019:Survival Analysis