Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Ectopic cervical thymoma in a patient with Myasthenia gravis. | Wu et al. Journal of Cardiothoracic Surgery 2011 6 89 http content 6 1 89 JCTS JOURNAL OF CARDIOTHORACIC SURGERY CASE REPORT Open Access Ectopic cervical thymoma in a patient with Myasthenia gravis Ti Hei Wu 1 Jong Shiaw Jin2 Tsai Wang Huang1 Hung Chang1 and Shih Chun Lee1 Abstract Ectopic cervical thymoma is rare and is often misdiagnosed as a thyroid tumor or other malignancy. Ectopic thymic tissue can be found along the entire thymic descent path during embryogenesis. However a thymoma arising from such ectopic thymic tissue is extremely rare. Herein we report a patient with ectopic cervical thymoma and myasthenia gravis MG and discuss the management. Background Ectopic cervical thymomas are very rare and often present as palpable neck masses. Ectopic cervical thymoma presenting in patients with MG is even rarer and only two other cases have been reported in the literature 1 2 . The diagnosis is very difficult to make and has a major diagnostic pitfall. Extended thymectomy offered a good result for these patients. Herein we present a case of ectopic cervical thymoma associated with MG. Case report A 58-year-old woman presented to our Neurology department with ptosis that had persisted for 4 months. A physical examination revealed a palpable cervical mass. Repetitive nerve stimulation testing revealed abnormally decreasing responses and the acetylcholine receptor antibody titer in the patient s serum was elevated nmol L normal nmol L . Other laboratory examinations were unremarkable including thyroid function tests and tests for autoimmune diseases. She was diagnosed with MG and received pyridostigmine treatment 180 mg day . Computed tomography CT of her chest revealed one well- circumscribed homogeneous mass of soft tissue measuring X X cm at the lower pole of the left thyroid gland Figure 1 . The fat plane between the thyroid gland and the tumor was clear. The patient was subsequently referred to our thoracic .
