[Orbital pseudotumor with thrombocytopenia and myasthenia (author's transl)]

A 13-year-old girl presented first with an inflammatory pseudotumor of the orbit. A biopsy showed lymphoid hyperplasia. A few months later the patient developed an idiopathic thrombocytopenia. Six months later she developed a myasthenia. The latter responded well to a thymectomy and the orbital pseudotumor disappeared with radiotherapy. The possible connection among these three diseases is discussed.