胸腺增大常合并自身免疫性疾病,如Graves病、重症肌无力、阿狄森病等。自1929年Hammar报道Graves病合并胸腺增大以来,此类病例陆续有报道。1992年Ichiki等曾报道Graves病同时合并胸腺增大及重症肌无力,但国内鲜见报道。我院自1993年至1998年收治了5例Graves病合并胸腺增大患者,其中3例同时合并重症肌无力,现报道如下。 Increased thymus often associated with autoimmune diseases, such as Graves disease, myasthenia gravis, Addison’s disease and so on. Since 1929, Hammar reported Graves disease associated with thymus increased, such cases have been reported. 1992 Ichiki et al have reported Graves disease combined with thymus and myasthenia gravis, but rarely seen in China. From 1993 to 1998, our hospital admitted 5 patients with Graves’ disease complicated with thymus enlargement, of which 3 patients with myasthenia gravis at the same time, are reported as follows.