Modern rheumatology case reports最新文献

Polymyalgia rheumatica (PMR) is a common inflammatory disorder characterized by myalgia/stiffness in proximal hip and shoulder girdle, elevated C reactive protein, and erythrocyte sedimentation rate, but its pathogenesis is not fully elucidated. We report three cases of PMR who do not respond adequately to standard treatment. Those patients had typical symptoms of myalgia and muscle weakness, with elevated C reactive protein in absence of creatine kinase elevation. Muscle specimen showed the findings of vasculitis in all cases; therefore, muscular-limited vasculitis may be an underlying pathology in PMR in those refractory cases.

Myositis-specific autoantibodies found in dermatomyositis (DM) are associated with clinical symptoms and responses to therapy and are useful for diagnosis, treatment selection, and prognostication. Although the prevalence of anti-small ubiquitin-like modifier-activating enzyme (anti-SAE) antibodies in DM patients is low, clinical features such as skin symptoms preceding muscle symptoms and a higher incidence of dysphagia and malignancy have been reported. Herein, we present a case of anti-SAE antibody-positive DM in which panniculitis of the lower legs, a rare dermatological manifestation of DM, preceded muscle symptoms by 2 months. This case was associated with cervical cancer; however, the clinical course of DM was favourable with glucocorticoid monotherapy. Anti-SAE antibody-positive DM needs to be considered as a differential diagnosis of unexplained panniculitis without muscle symptoms.

Eosinophilic granulomatosis with polyangiitis is a systemic vasculitis of small- and medium-sized blood vessels. The disease can manifest itself variably, with the most commonly affected organs including the lungs, sinuses, and peripheral nervous system. Ocular involvement is rare, and the visual prognosis is generally poor. To date, only a few cases have been published describing the ocular manifestations of eosinophilic granulomatosis with polyangiitis. Given the rarity of these complications, diagnosis can be difficult. We report the case of a 60-year-old woman with a history of asthma, sinusitis, and peripheral neuropathy, who presented to our hospital with sudden loss of vision in her right eye. After referral to an ophthalmologist, a diagnosis of central retinal artery occlusion of the right eye was made. Laboratory tests showed hypereosinophilia and mild positivity for antinuclear antibodies. Imaging revealed multiple micronodules in the lung and sinusopathy. Diagnostic tests for stroke, malignancy, and infectious diseases were negative. Based on laboratory, clinical, and imaging data, the patient was diagnosed with eosinophilic granulomatosis with polyangiitis. Treatment with glucocorticoids and cyclophosphamide was started to induce disease remission. The patient achieved a clinical response to treatment with sustained normalisation of peripheral eosinophil counts and maintenance therapy with mepolizumab was initiated. Unfortunately, no improvement in visual function was observed. In patients with sudden vision loss and hypereosinophilia, eosinophilic granulomatosis with polyangiitis should be suspected. Timely diagnosis is essential to initiate appropriate treatment. However, the effect of systemic treatment on improving patients' visual function is still unclear.

Lymphoproliferative disorders are rare complications in patients with autoimmune diseases who are receiving immunosuppressive therapy. This case report describes a 74-year-old man with diffuse cutaneous systemic sclerosis (SSc), anti-RNA polymerase III antibodies, and interstitial pneumonia. The patient's condition initially improved with prednisolone and intravenous cyclophosphamide, followed by maintenance therapy with azathioprine (AZA), nintedanib, and macitentan for pulmonary hypertension. Thirty months after initiating AZA, the patient developed nodules and ulcers in the left lower jaw and philtrum. Skin biopsy confirmed diffuse large B-cell lymphoma. Discontinuation of AZA led to the resolution of the ulcers, and no other lesions were found. This case highlights the risk of iatrogenic immunodeficiency-associated lymphoproliferative disorders in patients with SSc, particularly in those with anti-RNA polymerase III antibodies, who are known to have an increased risk of malignancy. Although methotrexate-associated lymphoproliferative disorders are well documented in patients with rheumatoid arthritis, this is the first reported case of AZA-associated lymphoproliferative disorder in SSc. These findings emphasise the importance of close monitoring of malignancies, including lymphoproliferative disorders, in patients with SSc undergoing immunosuppressive therapy.

Giant cell arteritis (GCA) is an autoimmune disease that predominantly affects individuals over 50 years of age by causing inflammation typically in the temporal and cranial arteries. While glucocorticoids like prednisone are the first-line treatment for GCA, glucocorticoid monotherapy is often inadequate for preventing disease flares and is associated with significant side effects when long-term use is required, necessitating the exploration of alternative therapies. Tocilizumab (TCZ) has proven effective as a steroid-sparing agent; however, some patients may respond inadequately or develop adverse events. Treatment with the Janus kinase (JAK) inhibitor upadacitinib (UPA) has recently emerged as a potential alternative therapy for refractory GCA, and its phase III clinical trials successfully demonstrated its efficacy for GCA patients, with or without prior treatment with TCZ. It has also been recently approved by both the European Commission and the U.S. Food and Drug Administration for GCA. However, real-world data on the efficacy of UPA in GCA remain scarce. This case report describes an 82-year-old woman with GCA refractory to both prednisone and TCZ, who reported severe side effects and decreased quality of life from the latter medication. Treatment with UPA resulted in substantial improvements in symptoms, including headaches and fatigue, with minimal negative responses. This outcome demonstrates the potential of UPA as a promising treatment option for GCA patients who are unresponsive or intolerant to current standard therapies. Further real-world studies are warranted to validate UPA's long-term safety and efficacy in treating GCA.

Diffuse alveolar haemorrhage (DAH) is an uncommon and potentially life-threatening occurrence in systemic lupus erythematosus, involving bleeding into the alveolar space caused by the disruption of the alveolar capillary basement membrane. We present a 24-year-old Persian woman with a complaint of progressively worsening shortness of breath following the administration of intramuscular Rhogam after 3 days. According to her worsening clinical condition, the pregnancy was terminated. She was admitted to the intensive care unit and intubated. Simultaneously, she developed fungal and bacterial pneumonia tolerant to therapies. After several investigations, the patient was finally diagnosed with systemic lupus erythematosus along with DAH, as the first presentation of the disease. This is the first case of a pregnant woman experiencing DAH as a lupus flare following Rhogam injection. Clinicians should be aware of the mimicry nature of lupus and the importance of immune reactions in these patients.

Behçet's disease (BD) is a chronic, relapsing, systemic vasculitis of unknown aetiology that affects blood vessels of all sizes, potentially leading to severe complications such as coronary artery aneurysms. This report describes the case of a 33-year-old woman with BD who presented with recurrent chest pain. Imaging revealed a large saccular aneurysm in the left anterior descending artery. Management involved multiple percutaneous coronary interventions to stabilise the aneurysm, alongside infliximab, a tumour necrosis factor-alpha inhibitor, to control the underlying vasculitis. The patient has remained in clinical remission for over 3 years, providing additional evidence supporting the role of infliximab in addressing vascular complications in BD. This case highlights the challenges in managing coronary artery aneurysms in BD and emphasises the need for further research into the long-term safety and efficacy of infliximab for such cases.

IgG4-related disease (IgG4-RD) is a systemic, immune-mediated, fibroinflammatory disorder that affects multiple organs. Histopathologically, the supportive findings of IgG4-RD include dense lymphocytic infiltrates, obliterative phlebitis, storiform fibrosis, and elevated numbers of IgG4-positive plasma cells. However, the presence of granulomatous inflammation is generally considered highly atypical, suggesting alternative diagnoses such as sarcoidosis and lymphoma. Here, we present a case of IgG4-RD involving granulomatous lymphadenopathy. Labial salivary gland biopsy findings were consistent with IgG4-related sialadenitis. Elevated serum IgG4 levels, hypocomplementemia, and abnormal imaging findings in the kidneys and pancreas indicated an association with IgG4-RD. The patient was treated with prednisolone, which resulted in a significant improvement in the serum IgG4 and complement levels and a notable reduction in lymph node swelling. Although granulomatous inflammation is rare, integrating clinical, serological, radiological, and pathological parameters can ensure an accurate assessment within the appropriate clinicopathological context.

Pustulotic arthro-osteitis (PAO) is an inflammatory osteoarticular disorder associated with palmoplantar pustulosis (PPP). Whilst anti-TNF-α agents and IL-23 inhibitors have shown efficacy in PAO, the therapeutic potential of bimekizumab (BKZ), a dual IL-17A and IL-17F inhibitor, remains unestablished. A 53-year-old Japanese man with a history of PPP developed fever and polyarthritis involving the distal interphalangeal joints, shoulders, and knees. Laboratory investigations revealed elevated inflammatory markers, including C-reactive protein and matrix metalloproteinase-3. Imaging studies showed inflammation of the sternum and sacroiliac joints, consistent with PAO. Despite treatment with nonsteroidal anti-inflammatory drugs, methotrexate, adalimumab, and upadacitinib, his symptoms and systemic inflammation persisted. Bacterial cultures were negative, and no other causes of fever were identified. The patient became afebrile the day after switching to BKZ, and both joint and skin symptoms gradually improved thereafter, along with normalisation of laboratory markers. This case highlights the potential utility of BKZ in the treatment of refractory PAO, particularly in cases with systemic inflammation and fever.

Recombinant human granulocyte-colony stimulating factor (G-CSF) is widely used for primary or secondary leukopenia induced by chemotherapy with strong anticancer drugs. Recently, there have been rare but accumulating cases of aortitis in patients receiving G-CSF agents, which are usually treated with glucocorticoids. Here, we report a case of G-CSF-induced aortitis complicated with intensive chemotherapy for Ewing's sarcoma, which was successfully treated with one bolus of intravenous tocilizumab, an anti-interleukin-6 inhibitor, resulting in early suppression of aortic inflammation and prompt resumption of chemotherapy. Our current case provides useful insights into the pathogenesis of G-CSF-induced aortitis and its treatment strategy with an interleukin-6 blockade without glucocorticoids.