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[A case of myasthenia gravis with transient taste disorders followed by aplastic anemia after thymectomy]
Osamu Osada1, Akira Iwasaki, Hirotaka Nakahashi
1Department of Neurology, Fukaya Red Cross Hospital.
Abstract:
A 45-year-old man was admitted to our hospital because of taste disorders in March 2014. He exhibited cervical muscle weakness and left eye ptosis, which responded to Tensilon test, and was diagnosed with myasthenia gravis (MG). He developed aspiration pneumonia and myasthenic crisis, which was treated with intravenous immunoglobulin and steroid pulse therapy. All symptoms disappeared. Oral administration of prednisolone and tacrolimus was started. Chest CT revealed thymoma and extended thymectomy was performed in May 2014. In December 2014, seven months after the thymectomy, hematological examination showed pancytopenia including severe neutropenia. We diagnosed his illness as aplastic anemia (AA). Cyclosporine therapy with transfusion was administerd and led to reticulocyte count recovery. Since May 2015, hemoglobin recovery reached a blood transfusion free period. To our knowledge, this is the first case report with the patient supposed of relationship among taste disorders, AA and thymoma-associated MG.
Insights
This case report details a patient with taste disorders, myasthenia gravis (MG), and thymoma who later developed aplastic anemia (AA). It highlights a potential link between these conditions and their treatment.
Area of Science:
- Neurology
- Hematology
- Oncology
Background:
- Myasthenia gravis (MG) is an autoimmune disorder affecting neuromuscular junctions.
- Thymoma is a tumor of the thymus gland, often associated with MG.
- Aplastic anemia (AA) is a rare condition where the bone marrow fails to produce sufficient blood cells.
Observation:
- A 45-year-old male presented with taste disorders, cervical muscle weakness, and ptosis, diagnosed as MG.
- He experienced myasthenic crisis and aspiration pneumonia, treated successfully.
- Chest CT revealed thymoma, leading to thymectomy; subsequently, he developed pancytopenia, diagnosed as AA.
Findings:
- The patient's MG symptoms resolved after treatment for myasthenic crisis and thymectomy.
- Aplastic anemia developed seven months post-thymectomy, responding to cyclosporine therapy and transfusions.
- Hematological recovery was achieved, leading to a transfusion-free period.
Implications:
- This case suggests a potential relationship between taste disorders, thymoma-associated MG, and aplastic anemia.
- It underscores the importance of monitoring for hematological complications after thymectomy in MG patients.
- Further research is warranted to elucidate the underlying mechanisms connecting these conditions.
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