Internal medicine
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A 70-year-old woman with anti-aminoacyl-tRNA synthetase (ARS) antibody-positive interstitial lung disease (ARS-ILD) received daily medications and regular cyclophosphamide cycles for recurring exacerbations. Approximately four years after immunosuppression initiation, the patient was admitted for progressive dyspnea on exertion. ⋯ A bronchoalveolar lavage fluid (BALF) examination revealed amorphous globules and alveolar macrophages with eosinophilic granules. Owing to negative anti-granulocyte-macrophage colony-stimulating factor antibody tests, a diagnosis of secondary pulmonary alveolar proteinosis (PAP) was established.
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Case Reports
Deterioration of Vocal Cord Paralysis after COVID-19 Infection in Multiple System Atrophy.
Multiple system atrophy (MSA) is a progressive neurodegenerative disease that often causes vocal cord paralysis (VCP), Parkinsonism, cerebellar ataxia, and autonomic dysfunction. VCP is the most fatal symptom that affects the prognosis of patients with MSA. ⋯ We herein present two cases of patients with MSA in whom VCP worsened after COVID-19 and this led to the need to perform emergency tracheostomies. As VCP may deteriorate after COVID-19 in patients with MSA, it is important to prevent COVID-19 in these patients and closely monitor such patients for any signs of VCP deterioration post-infection to improve their prognosis.
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Rosai-Dorfman disease (RDD) is a rare histiocytic proliferative disorder characterized by lymphadenopathy and extra-nodal manifestations. Some patients with RDD require systemic treatment, but there is no consensus on the treatment strategy owing to its extreme rarity. ⋯ We herein report the first case of RDD with cutaneous involvement and arthritis that was successfully treated with methotrexate and infliximab. This case highlights the potential efficacy of anti-TNF-α therapy for RDD, offering a novel treatment option for this rare condition.
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The co-occurrence of subacute thyroiditis (SAT) and Graves' disease (GD) is rare. A 62-year-old Japanese man presented with shifting neck pain and elevated thyroid hormone level. The patient tested positive for thyroid-stimulating hormone receptor antibodies. ⋯ Consequently, concurrent GD was suspected, and diagnostic assistance was obtained by confirming increased uptake on 99mTechnetium thyroid scintigraphy. A genetic analysis of human leukocyte antigen (HLA) revealed genotypes associated with susceptibility to SAT (HLA-B*35:01) and GD (HLA-DPB1*05:01). Furthermore, the possibility of coronavirus disease 2019 as a related environmental factor cannot be ruled out in this case.
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Vascular occlusive events are notable adverse effects of tyrosine kinase inhibitors (TKIs), which are promising treatments for chronic myeloid leukemia (CML). We herein report the case of a patient with CML who developed cerebrovascular occlusion of the circle of Willis during TKI treatment. ⋯ The lack of moyamoya vessel development may be explained by the suppression of tyrosine kinases that are responsible for angiogenesis. Cerebrovascular occlusion of the circle of Willis, without significant development of moyamoya vessels, may be an important phenotype of TKI-associated vasculopathy.