Mucoepidermoid Carcinoma of Thymus with Myasthenia Gravis

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  • Seike Ayako
    Department of Thoracic Surgery, International Medical Center
  • Nagasaka Satoshi
    Department of Thoracic Surgery, International Medical Center
  • Kuwata Hiromi
    Department of Thoracic Surgery, International Medical Center
  • Ito Hideyuki
    Department of Thoracic Surgery, International Medical Center

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  • 重症筋無力症と同時発症した胸腺原発粘表皮癌の１切除例

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Abstract

Background. It is well known that mucoepidermoid carcinoma is an extremely rare subtype of thymic cancer. Mucoepidermoid carcinoma of the thymus complicated by myasthenia gravis has not been reported. Case. The patient was a 62-year-old woman who presented with dysphagia, which was diagnosed as myasthenia gravis. Chest CT showed a tumor 4.5×6 cm in size in the anterior mediastinum. The patient was prescribed prednisolone and pyridostigmine bromide for myasthenia gravis. The myasthenia gravis improved, and chest CT showed a reduction in tumor size. It was suspected the tumor was thymoma. The thymoma and an enlarged thymus were surgically removed by median sternotomy. The pathological diagnosis of the specimen was mucoepidermoid carcinoma of the thymus. Conclusion. Mucoepidermoid carcinoma of the thymus complicated by myasthenia gravis is extremely rare.<br>

Journal

  • Haigan

    Haigan 50 (1), 12-14, 2010

    The Japan Lung Cancer Society

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