Abstract
Of 113 lympho-epithelial thymomas retrospectively studied, 56 were epithelial, 20 lymphocytic, 30 mixed and 7 were undefined forms. There were 88 resections (20 stage I, 47 stage II, 13 stage III and 8 stage IV). There were 69 primary resections (followed by radiotherapy in 54 cases) of which 57 were complete and 12 were incomplete. There were 19 secondary resections after radiotherapy: 10 were complete and 9 were incomplete and 25 patients were not operated upon and were treated by radio- and chemotherapy. After primary resection, the actuarial 5-year survival is 64.07% and the 10-year survival is 50.86%. After a secondary resection, the 5 year-survival is 43.74%. After non-surgical treatment, it is 18.67%. After surgery, the prognostic importance of staging is confirmed as more important than the cellular structure. Myasthenic patients are subject to late accidents. Postoperative radiotherapy seems to be justified, but its effect is not statistically significant when resection is complete. Post-radiotherapy surgery is beneficial only in cases of complete resection. The metastatic evolution of thymomas has been underrated and seems to depend upon the local control of the tumour. The use of chemotherapy remains to be defined.
Published Version
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