A case of myasthenia associated with Hodgkin's disease with probable i
nvasion of the thymus is reported. Five cases of association between l
ymphomatous thymoma and myasthenia (2 Hodgkin's thymomas and 3 non-Hod
gkin's lymphamatous thymomas) have previously been reported. Myastheni
a healed after the lymphoma was treated. This association raises patho
genic problems in the 3 cases of non-Hodgkin's thymoma where invasion
of the thymus erased all its normal structure.