Myasthenia gravis in the elderly: report of 37 cases.

The treatment of myasthenia gravis in the elderly is controversial. Thirty-seven myasthenic patients with onset of the disease after the age of 60 were followed for a period of 14 years. All of the 37 patients received anticholinesterase drugs during this period, ten underwent thymectomy, and 24 were treated with corticosteroids. At present, one patient is in remission, 28 are improved, one is unchanged, and seven have died. Only one death was directly related to myasthenia. In the authors' experience thymectomy can be an effective treatment of myasthenia gravis in elderly patients; corticosteroid therapy can also be useful in addition to or as an alternative to surgery. Using a "personalized" schedule the authors obtained good results in 78 per cent of their patients.