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[Post-thymectomy Myasthenia Gravis ; Report of a Case]. 2015

Satoshi Hayashi, and Nana Takahashi, and Shunsuke Yasuda, and Kei Ishibashi, and Masahiro Kitada
Respiratory Center, Asahikawa Medical University, Asahikawa, Japan.

A 46-year-old woman was referred to our hospital for a tumor in the anterior mediastinum. She had no symptoms of myasthenia gravis(MG). Acetylcholine receptor antibody(AchR-Ab) was within the normal range. The tumor was completely resected by thymectomy. Pathological examination of the tumor identified it as a type AB thymoma (Masaoka stage I). Five days after the surgery, she experienced post-thymectomy MG (raised AchR-Ab and positive tensilon test). Her symptoms improved with anti-cholinesterase and tacrolimus therapy.

UI MeSH Term Description Entries
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009157 Myasthenia Gravis A disorder of neuromuscular transmission characterized by fatigable weakness of cranial and skeletal muscles with elevated titers of ACETYLCHOLINE RECEPTORS or muscle-specific receptor tyrosine kinase (MuSK) autoantibodies. Clinical manifestations may include ocular muscle weakness (fluctuating, asymmetric, external ophthalmoplegia; diplopia; ptosis; and weakness of eye closure) and extraocular fatigable weakness of facial, bulbar, respiratory, and proximal limb muscles. The disease may remain limited to the ocular muscles (ocular myasthenia). THYMOMA is commonly associated with this condition. Anti-MuSK Myasthenia Gravis,MuSK MG,MuSK Myasthenia Gravis,Muscle-Specific Receptor Tyrosine Kinase Myasthenia Gravis,Muscle-Specific Tyrosine Kinase Antibody Positive Myasthenia Gravis,Myasthenia Gravis, Generalized,Myasthenia Gravis, Ocular,Anti MuSK Myasthenia Gravis,Generalized Myasthenia Gravis,Muscle Specific Receptor Tyrosine Kinase Myasthenia Gravis,Muscle Specific Tyrosine Kinase Antibody Positive Myasthenia Gravis,Myasthenia Gravis, Anti-MuSK,Myasthenia Gravis, MuSK,Ocular Myasthenia Gravis
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013934 Thymectomy Surgical removal of the thymus gland. (Dorland, 28th ed) Thymectomies
D013945 Thymoma A neoplasm originating from thymic tissue, usually benign, and frequently encapsulated. Although it is occasionally invasive, metastases are extremely rare. It consists of any type of thymic epithelial cell as well as lymphocytes that are usually abundant. Malignant lymphomas that involve the thymus, e.g., lymphosarcoma, Hodgkin's disease (previously termed granulomatous thymoma), should not be regarded as thymoma. (From Stedman, 25th ed) Carcinoma, Thymic,Carcinomas, Thymic,Thymic Carcinoma,Thymic Carcinomas,Thymomas
D013953 Thymus Neoplasms Tumors or cancer of the THYMUS GLAND. Cancer of Thymus,Thymus Cancer,Thymus Tumors,Cancer of the Thymus,Neoplasms, Thymic,Neoplasms, Thymus,Thymic Cancer,Thymic Neoplasms,Thymic Tumors,Cancer, Thymic,Cancer, Thymus,Cancers, Thymic,Cancers, Thymus,Neoplasm, Thymic,Neoplasm, Thymus,Thymic Cancers,Thymic Neoplasm,Thymic Tumor,Thymus Cancers,Thymus Neoplasm,Thymus Tumor,Tumor, Thymic,Tumor, Thymus,Tumors, Thymic,Tumors, Thymus

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