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- Title
Follow-up study of thymomas with special reference to their clinical stages.
- Authors
Masaoka, Akira; Monden, Yasumasa; Nakahara, Kazuya; Tanioka, Tsuneo; Masaoka, A; Monden, Y; Nakahara, K; Tanioka, T
- Abstract
Follow-up data were obtained for 96 cases of thymoma. The one-year survival rate was 84.3%, the three-year 77.1%, the five-year 74.1%, and the ten-year 57.1%. The five-year survival rate of total resection group was 88.9%; that of non-radically treated group was 44.4%. Clinical stages were defined: Stage I--macroscopically encapsulated and microscopically no capsular invasion; Stage II--1. macroscopic invasion into surrounding fatty tissue of mediastinal pleura, or 2. microscopic invasion into capsule; Stage III--macroscopic invasion into neighboring organ; Stage IVa--pleural or pericardial dissemination; Stage IVb--lymphogenous or hematogenous metastasis. Five-year survival rates of each clinical stage were 92.6% in Stage I, 85.7% in Stage II, 69.6% in Stage III, and 50% in Stage IV. Recurrence after total resection was found in six of 69 cases. Seven of 13 patients treated by subtotal resection survived more than five years with postoperative radiotherapy.
- Subjects
THYMUS tumors; MYASTHENIA gravis; PROGNOSIS; METASTASIS; TUMOR classification; LONGITUDINAL method; DISEASE complications
- Publication
Cancer (0008543X), 1981, Vol 48, Issue 11, p2485
- ISSN
0008-543X
- Publication type
journal article
- DOI
10.1002/1097-0142(19811201)48:11<2485::AID-CNCR2820481123>3.0.CO;2-R