• Korean Journal of Head & Neck Oncology
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• v.21 no.1
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• pp.32-34
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• 2005

Myasthenia gravis with thymoma is associated with an increased risk of second malignancy, but concurrence of myasthenia gravis and thyroid carcinoma is rarely seen. In the treatment, it is emphasized to operate in two stage to avoid myasthenic crisis after surgery. In general, a thyroid cancer surgery is performed after controlling yasthenia gravis by means of thymectomy or medical treatment with steroids and anticholine esterase. We experienced two cases of thyroid carcinoma coexisting with myasthenia gravis, which is thought to be true first report in Korea.

• Journal of Yeungnam Medical Science
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• v.15 no.1
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• pp.125-134
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• 1998

Purpose: This study was undertaken to evaluate the clinical usefulness of Tensilon test, repetitive nerve stimulation test(RNST), single fiber EMG(SFEMG) test and acetylcholine receptor antibody(AchR Ab) assay for making diagnosis of myasthenia gravis(MG). Method: These tests were performed in 21 MG patients which were classified into 11 ocular, 5 mild generalized, 4 moderate generalized, and 1 chronic severe MG. Result: The overall positivity of Tensilon test, SFEMG and AchR Ab was 95%, 87%, and 76% respectively. The overall positivity of RNST was 67%; 38% on flexor carpi ulnaris, 43% on adductor digiti quinti and 62% on orbicularis oculi muscles. The positivity of each test was higher in generalized MG group than in ocular MG group. But we could observe the statistically significant difference only in the RNST(p<0.05). Conclusion: Tensilon test showed the highest positivity in all MG groups. So we would like to recommend the, Tensilon test for the diagnosis of MG at first, followed by RNST and AchR Ab assay, and SFEMG would be indicated to MG group which showed relatively low postivity in other tests.

• Journal of Chest Surgery
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• v.29 no.7
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• pp.734-740
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• 1996

The relative importance of various factors influencing the prognosis and survival in the treatment of thymoma is still controversial. Sixty ave patients operated on for thymoma from Jan. 1981 to Dec. 1994 were evaluated, 28 patients (43.1 %) with myasthenia gravis and 37 patients (56.9%) without. Masaoka staging revealed stage I disease in 28 patie ts(4).1%) , stage ll in 1) patients(20.0%), stage 111 In 22 patients(33.8%), stage IVa in 1 patients(1.5%), and stage IVb in 1 patient(1.5%). There was no operative mortality. A complete resection was performed in 48 patients (73.8%) patients, associated in 10 patients (15.4%) with postoperative adjuvant treatment(radiotherapy 5; chemotherapy 1: radio- and chemotherapy 4). Thymomas were found to be predominantly of the epithelial type in 16 patients(24.6%), predominantly Iymphocytic type in 18 patients(27.7%), and mlxed in 22 patients (33.9%). The overall 5- and 10-year survival rates were 87% and 82%, respectively, Factors indicating a poor prognosis included local invasion, incomplete excision, thymic carcinoma, advanced staging and myasthenia gravis. The de- gree of tumor invasion turned out to be the main prognostic factor, and treatment should be planned ac- cordingly. The prognosis is best predicted by the stage of the tumor as determined intraoperatively and is poorer in patie ts with incomplete resection than in those with complete resection of the thynoma. No recurrence developed In patients with stage I disease.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.9 no.2
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• pp.164-167
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• 1998

Myasthenia gravis is a neuromuscular disorder that affects striated muscles especially those innervated by the cranial nerves. Most patients present with symptoms relating to the head and neck and thus may be seen first by the otolaryngologist. Recently we had experienced a case of myasthenia gravis with the complaints of hypernasality and voice fatigue in a 49 year old male. In this case, all symptoms were improved markedly with administration of anticholinesterase.

• Journal of Chest Surgery
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• v.22 no.5
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• pp.806-810
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• 1989

There has been arguing in the proper surgical treatment of myasthenia gravis. But the ultimate goal of operation is complete removal of thymic tissues. In view of previous surgical-anatomic studies that there are frequently thymic tissues from the level of thyroid gland to the diaphragm and from hilum to hilum, en bloc resection of thymus, mediastinal fat including both sheets of pleura and pericardium is reasonable. We experienced four myasthenic patients with radical thymectomy from 1989. As compared to the result of previous simple thymectomy group, the 23 patients who were operated from 1976 to 1988[Group I ], excellent surgical outcome was obtained in radical thymectomy group[Group II ].

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.34 no.2
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• pp.100-100
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• 2021

• The Journal of Korean Physical Therapy
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• v.13 no.3
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• pp.761-767
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• 2001

Myasthenia gravis is an autoimmune disorder mainly caused by antibodies to the muscle acetylcholine receptors at the neuromuscular junction Loss of these receptors leads to a defect in neuromuscular transmission with muscle weakness and fatigue. In this study, to understand of myasthenia gravis, were viewed about anatomical and physiological view of neuromuscular junction.

• Annals of Clinical Neurophysiology
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• v.8 no.2
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• pp.182-185
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• 2006

Various immunotherapeutic modalities have been used based on the autoimmune pathogenic mechanisms of myasthenia gravis (MG). Cell-mediated immunity as well as auto-antibodies may play a role in the remission and relapse of MG. We recently experienced two patients with MG who showed spontaneous remission after inadvertent severe leukopenia. These findings suggest that the cell-mediated immune process is important in the treatment of MG, and selective suppression of leukocyte may induce remission in the patients with intractable MG.

• Journal of Chest Surgery
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• v.25 no.12
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• pp.1516-1522
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• 1992

Thirty patients with myasthenis gravis[MG] underwent transternal extended thymectomy between 1983 and 1992 in Pusan National University Hospital. The age of patients was 11 to 62 years[mean; 35.2 years] with female dominant[M: F=l: 4]. According to modified Osserman classification, group I was in 6, II A in 7, II B in 13, III in 2, IV in 2 patients respectively. Their clinical response to thymectomy was evaluated. The follow-up period ranged from 2 months to 9.5 years[average; 51.3 months]. Fourteen patients[13.3%] had remission and eleven[43.3%] were improved after operation; half of patients were benefited from operation. Twenty patients had thymic hyperplasia and seven had non-infiltrating thymoma. In thymomatous MG one patient had remission and five were improved. Postoperative death was in a female patient. The cause of death was respiratory failure in the severe generalized MG preoperatively.

• Journal of Chest Surgery
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• v.19 no.4
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• pp.736-743
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• 1986

Thymus gland is a kind of endocrine organ which secretes thymosin and thymoprotein. There can be developed variable lesions like thymoma, thymic hyperplasia, thymic cyst, thymolipoma, and carcinoid tumor of the thymus gland. We have experienced 25 patients of thymic disease: thymoma 12, thymic hyperplasia 11, thymic cyst 1, carcinoid tumor 1. The age distribution were ranged from 3 to 66 years and the sex ratio was 1:1.8 [male to female]. Thymectomy was performed in all cases, but 3 cases with deep infiltration to the adjacent structures were not resectable completely. Malignancy [all thymoma] were 5 and the rest were benign. Two cases were died of recurrence after tumor resection. Myasthenia gravis occurred in 10 cases. Among them, 2 were thymoma and 8 were thymic hyperplasia. We could obtained the result that thymectomized cases reached 2 remission and 5 improvement. Myasthenia gravis treated medically [18 cases] had no remission and only 2 clinical improvement. In the light of these results, early radical thymectomy would be most favorable treatment in not only thymic tumor, but generalized myasthenia gravis.