title: Evaluation of the prognostic factors after thymoma resection.
abstract: We discuss the prognostic factors of thymoma clinicopathologically. Regarding the survival rate by the clinical stage classification of Masaoka, significant correlation was made between stage I and stage III (P < 0.05) and stage I and stage IVa (P < 0.03). The tumor resectability was classified into complete and incomplete resection, and a significant difference was shown by the survival rate of the complete resection at P < 0.0001. Regarding the survival rate by the invasive organ of the tumor, significant correlation was made between no invasion and the great vessel invasion (P < 0.0004) and between invasion except for the great vessel and great vessel invasion (P < 0.004). As for the histological type, the tendency in which the epithelial cell type predominancy increased with the progress of the clinical stage was shown. A significant correlation was not shown in the evaluation by adjuvant therapy. However, recently we have done chemotherapy and/or radiotherapy periodically for invasive thymoma.
authors.affiliation: Department of Surgery, TamaNagayama Hospital, Nippon Medical School, Tama City, Tokyo, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Matsushima
authors.forename: H
authors.initials: H
authors.lastname: Yamamoto
authors.forename: K
authors.initials: K
authors.lastname: Egami
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017024:Chemotherapy, Adjuvant; D016009:Chi-Square Distribution; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D011379:Prognosis; D018714:Radiotherapy, Adjuvant; D015996:Survival Rate; D013934:Thymectomy; D013945:Thymoma / Q000473:pathology* / Q000601:surgery*; D013953:Thymus Neoplasms / Q000473:pathology* / Q000601:surgery*