Comment on

• A review of 79 thymomas: modification of staging system and reappraisal of conventional division into invasive and non-invasive thymoma.

  Koga K, Matsuno Y, Noguchi M, Mukai K, Asamura H, Goya T, Shimosato Y. Koga K, et al. Pathol Int. 1994 May;44(5):359-67. doi: 10.1111/j.1440-1827.1994.tb02936.x. Pathol Int. 1994. PMID: 8044305