[Myasthenia gravis treated with plasmapheresis]

Therapeutic plasmapheresis is nowadays the method of choice in severe cases of myasthenia gravis. The authors confirm the therapeutic effect of this method and emphasize its importance in the differential diagnosis of severe cases where myasthenia gravis is suspected only from clinical symptoms, and electromyographic, roentgenological and laboratory evidence (antibodies against acetylcholine receptors) is lacking. The mentioned procedure led to thymectomy with the finding of a tumour of the thymus within three and a half months after the development of the first symptoms of the disease.