several aspects of the case were noteworthy : ( 1 ) the original thymoma failed to demonstrate evidence of capsular invasion , ( 2 ) the association of myasthenia gravis with metastatic predominantly epithelial cell thymoma has not been previously documented , and ( 3 ) the time to development of metastatic disease is the second longest interval reported in the medical literature .
C0026896
myasthenia gravis
C0279705
epithelial