Reported: This autopsy case of myasthenia gravis in a 41 year old female revealed thymus hyperplasia with germinal centers remaining in the fatty tissues. The infiltration of lymphocytes (lymphorrhage) was remarkable only in the tissues near the thymus, namely the intercostal muscles, myocardium, and thyroid; in the other affected skeletal muscles, it was only slight. The Lymphorrhage in the myocardium was so remarkable that was histologically diagnosed as subacute myocarditis.
Discussed: In agreement with recent studies, these findings seem to suggest the view that myasthenia gravis is an autoimmune disease.