Saloni Patel, Elena Wei, Amy Huang, Ziga Vodusek, Jaroslaw J Jedrych, Jemima Albayda, Jun Kang
{"title":"Anti-nuclear matrix protein 2 antibody-positive dermatomyositis associated with smouldering myeloma mimicking anti-melanoma differentiation-associated gene 5 antibody-positive dermatomyositis: A case of digital gangrene, palmar papules, and scrotal rash.","authors":"Saloni Patel, Elena Wei, Amy Huang, Ziga Vodusek, Jaroslaw J Jedrych, Jemima Albayda, Jun Kang","doi":"10.1093/mrcr/rxaf047","DOIUrl":"10.1093/mrcr/rxaf047","url":null,"abstract":"<p><p>Dermatomyositis (DM) is an idiopathic inflammatory myopathy with characteristic cutaneous manifestations and systemic complications, including malignancy and interstitial lung disease (ILD). Myositis-specific autoantibodies (MSAs) define distinct disease subtypes, but significant clinical heterogeneity can still occur. Here, we report a unique case of smouldering myeloma-associated anti-nuclear matrix protein 2 (anti-NXP2) antibody-positive DM mimicking clinical features of anti-melanoma differentiation-associated gene 5 (anti-MDA5) antibody-positive DM, including digital ischemia and palmar papules (i.e. inverse Gottron's papules), and severe synovitis without clinically evident myopathy. Additionally, the patient exhibited a rare scrotal rash. This case expands the known spectrum of cutaneous and systemic manifestations in anti-NXP2 antibody-positive DM and emphasises the heterogeneous nature of DM, where significant clinical mimicry can occur despite the presence of a well-defined MSA. It highlights the need for further research into the immune mechanisms and biomarker profiles driving these mimicking DM phenotypes, which could improve early diagnosis, risk stratification, and targeted therapeutic strategies.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Khalid El-Jack, Fawaz Naeem, Jenelle Safadi, Dario Marangoni, Alexander M Solomon, Franz Fogt, Grant T Liu, Madhura A Tamhankar
{"title":"Unusual systemic conditions in a patient with giant cell arteritis.","authors":"Khalid El-Jack, Fawaz Naeem, Jenelle Safadi, Dario Marangoni, Alexander M Solomon, Franz Fogt, Grant T Liu, Madhura A Tamhankar","doi":"10.1093/mrcr/rxaf014","DOIUrl":"10.1093/mrcr/rxaf014","url":null,"abstract":"<p><p>Giant cell arteritis is a systemic vasculitis that causes inflammation in medium- and large-sized blood vessels. The condition can lead to irreversible blindness if not recognised and treated promptly with high-dose steroids. Clinical manifestations typically include headache, jaw pain, fever, and fatigue. However, unusual manifestations of the disease have been reported, including pulmonary nodules, uveitis, pericarditis, and stroke. We report a case of biopsy-confirmed giant cell arteritis in a patient found to have renal cell carcinoma, exhibiting these unusual manifestations simultaneously. This case report demonstrates the atypical presentation that giant cell arteritis may have and the importance of having a high clinical suspicion for the condition.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143627336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luisa Fernanda Jiménez-Arcia, Estiven Crespo-Vizcaíno, Alexandra González-Montoya, Alejandro Vélez-Hoyos, Luis Fernando Pinto-Peñaranda
{"title":"Neurosarcoidosis or granulomatosis with polyangiitis? A complex case of a brain mass.","authors":"Luisa Fernanda Jiménez-Arcia, Estiven Crespo-Vizcaíno, Alexandra González-Montoya, Alejandro Vélez-Hoyos, Luis Fernando Pinto-Peñaranda","doi":"10.1093/mrcr/rxaf019","DOIUrl":"10.1093/mrcr/rxaf019","url":null,"abstract":"<p><p>Sarcoidosis is an immune-mediated systemic disease characterised by the presence of non-caseating granulomas in various parts of the body in the absence of another defined aetiology. Neurologic involvement [neurosarcoidosis (NS)], which occurs in 5-10% of patients with the disease, encompasses a range of clinical and histopathological manifestations that can lead to significant morbidity and mortality. We present a case of a young man with a history of chronic sinusitis, who developed sudden headache associated with seizures. After thorough clinical and paraclinical evaluation, the diagnosis of NS was made once other neurovascular, infectious, metabolic, tumour-related, and immune-mediated aetiologies were ruled out. NS can present as a large dural mass due to nodular pachymeningitis, which can be clinically indistinguishable from other entities such as neoplasms and granulomatosis with polyangiitis. Isolated central nervous system involvement in this entity is rare and usually it is associated with other systemic manifestations. More aggressive management is required to treat this form of sarcoidosis presentation. NS represents a diagnostic challenge and requires ruling out more common entities such as infectious and non-infectious causes like granulomatosis with polyangiitis.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143652905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Successful control of recurrent MAS by canakinumab in a Sjögren syndrome patient with homozygous MEFV P369S variants and review of literatures.","authors":"Nobuyuki Ono, Motoki Yoshimura, Toshiya Nishida, Yusuke Yamauchi, Goro Doi, Yoko Fuyuno, Motoshi Sonoda, Hiroaki Niiro","doi":"10.1093/mrcr/rxaf016","DOIUrl":"10.1093/mrcr/rxaf016","url":null,"abstract":"<p><p>Macrophage activation syndrome (MAS) is an autoinflammatory condition, which severely complicates autoimmune diseases, such as systemic juvenile idiopathic arthritis, adult onset Still's disease, and systemic lupus erythematosus. MEFV gene encodes a component of pyrin inflammasome, whose variants cause familial Mediterranean fever (FMF). We experienced a recurrent MAS case with homozygous MEFV P369S variants accompanied by Sjögren syndrome and pulmonary arterial hypertension, whose recurrent MAS was successfully treated with canakinumab. Pathogenicity of MEFV P369S variant is still inconsistent, and clinical interpretation of this variant is challenging. Thus, we reviewed previous literatures and revealed that the majority of FMF patients with collagen diseases in carried MEFV P369S variant, all of which were reported from Japan. In this case-based review, we clarify the epidemiology of MEFV variants in collagen diseases and discuss the significance of their genetic analysis.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143569210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of abatacept added to mycophenolate mofetil for refractory calcinosis in juvenile dermatomyositis.","authors":"Maho Shimizu, Haruna Nakaseko, Yoshinao Muro, Naomi Iwata","doi":"10.1093/mrcr/rxaf004","DOIUrl":"10.1093/mrcr/rxaf004","url":null,"abstract":"<p><p>Calcinosis is an intractable condition in juvenile dermatomyositis (JDM). The effect of abatacept on calcinosis remains controversial. We describe a case of an 8-year-old boy in whom the addition of abatacept to mycophenolate mofetil was effective against calcinosis in JDM. The patient with antinuclear matrix protein 2 autoantibody suffered from refractory jJDM despite long-term treatment with corticosteroids and various immunosuppressive agents. Subcutaneous calcinosis with repeated spontaneous pain at the calcinosis site emerged 2 years after the start of treatment and gradually increased despite clinical improvement in muscle symptoms. The addition of intravenous abatacept to mycophenolate mofetil at the age of 6 years halted the increase in calcinosis. Spontaneous pain in calcinosis disappeared within 2 months. The calcinosis had significantly decreased by 1 year. An important strategy on calcinosis in JDM is getting complete control of the inflammation. Our case report suggests that abatacept may contribute to the improvement of calcinosis in JDM, at least as part of combination therapy with mycophenolate mofetil.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143607500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Above-knee amputation in a 69-year-old male with gouty tophi complicated by necrotising fasciitis - a case report.","authors":"Metasebia Worku Abebe, Abigya Aschalew Asfaw","doi":"10.1093/mrcr/rxae080","DOIUrl":"10.1093/mrcr/rxae080","url":null,"abstract":"<p><p>Gout is the most prevalent form of inflammatory arthritis in males as a result of high uric acid levels that cause deposition of monosodium urate crystals in soft tissues, bones, and joints. It commonly presents as a swollen, erythematous, and painful joint. Necrotising fasciitis is rapidly progressing aggressive soft tissue infection that spreads along the fascial planes sparing the skin; it is very uncommon for necrotising fasciitis to occur as a complication of gouty arthritis. We present here a case of a 69-year-old male with a known history of untreated gouty arthritis and tophi over the right foot that complicated into necrtotising fasciits of the leg with extension to the upper thigh, which was surgically debrided but also necessitated above-knee amputation for infection control, survival, and best possible functional outcome of the patient.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142808996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A case of Erdheim-Chester disease-a mimicker of IgG4-related disease and large vessel vasculitis.","authors":"Ippei Miyagawa, Shingo Nakayamada, Hirotsugu Nohara, Shumpei Kosaka, Masanobu Ueno, Yoshiya Tanaka","doi":"10.1093/mrcr/rxae086","DOIUrl":"10.1093/mrcr/rxae086","url":null,"abstract":"<p><p>The patient was a 57-year-old man who developed bilateral thigh pain and chest tightness 1 year ago. Chest computed tomography (CT) scan showed reticular shadows, thickened interlobular septa in both lung fields, and pericardial effusion. Three months ago, his symptoms worsened. A contrast CT scan revealed increased pericardial effusion, multiple masses in the right atrium, soft tissue shadows suggestive of retroperitoneal fibrosis, and soft tissue shadows around the thoracic and abdominal aorta. He visited University Hospital of University of Occupational and Environmental Health, Japan suspecting IgG4-related disease (IgG4-RD) or large vessel vasculitis (LVV). Based on the involvement of various organs and bilateral thigh pain, Erdheim-Chester disease (ECD) was suspected, and an 18F-fluorodeoxyglucose Positron Emission Tomography (FDG-PET) scan was performed. In addition to increased accumulation around the right ventricle, right coronary artery, and aorta, increased accumulation was confirmed in the distal femurs and proximal tibias on both sides, strongly suggesting ECD. A bone biopsy confirmed the diagnosis of ECD, showing bone fibrosis with CD68-positive and CD1a-negative foam cell infiltration, which is a characteristic of ECD. ECD is an extremely rare form of non-Langerhans cell histiocytosis. ECD affects a wide variety of organs, and its imaging findings can sometimes resemble those of IgG4-related disease or LVV. However, bone lesions are characteristic of ECD and are a key finding for its diagnosis. When systemic organ lesions, including bone lesions, are present, ECD should be included in the differential diagnosis, and PET-CT should be considered.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142839753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A case of glucocorticoid-refractory IgA vasculitis with diffuse alveolar haemorrhage: A therapeutic strategy for aberrant immunoglobulin depletion.","authors":"Kazuhiko Hirokawa, Shunichi Sato, Eiji Hiraoka, Keiichi Iwanami","doi":"10.1093/mrcr/rxae087","DOIUrl":"10.1093/mrcr/rxae087","url":null,"abstract":"<p><p>Diffuse alveolar haemorrhage (DAH) is a rare and severe complication of IgA vasculitis (IgAV). Although glucocorticoids and immunosuppressive agents are used for its treatment, there is no consensus on the optimal form of treatment. We herein report the case of a 53-year-old, female patient with IgAV. She was initially resistant to glucocorticoid therapy and experienced acute respiratory failure due to DAH but responded well to rituximab (RTX) and plasma exchange (PLEX). While some previous case reports have suggested that RTX or PLEX can be effective for severe IgAV, there are no reports of a combination of RTX and PLEX being used successfully to treat IgAV-associated DAH. In the model of IgAV pathogenesis proposed herein, aberrant IgA1 and IgA-specific IgG autoantibodies play a pivotal role. PLEX may facilitate the prompt removal of these circulating, aberrant immunoglobulins while RTX inhibits their further production. Consequently, a combination of RTX and PLEX may represent an effective treatment approach for severe glucocorticoid-refractory cases of IgAV.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correction to: A case of atypical IgG4-related disease presenting hypereosinophilia, polyneuropathy, and liver dysfunction.","authors":"","doi":"10.1093/mrcr/rxad066","DOIUrl":"10.1093/mrcr/rxad066","url":null,"abstract":"","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138471453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Long-term prognosis of Sjögren's syndrome with periodic tetraplegia and distal tubular acidosis, a case report.","authors":"Eiko Hasegawa, Naoki Sawa, Yuki Oba, Hiroki Mizuno, Akinari Sekine, Noriko Inoue, Kiho Tanaka, Masayuki Yamanouchi, Tatsuya Suwabe, Kei Kono, Kenichi Ohashi, Takehiko Wada, Yoshifumi Ubara","doi":"10.1093/mrcr/rxaf045","DOIUrl":"https://doi.org/10.1093/mrcr/rxaf045","url":null,"abstract":"<p><p>A 28-year-old woman was hospitalized with periodic quadriplegia after a common cold. Hypokalemia and acidosis were diagnosed. The anion gap was normal, but urinary potassium excretion was increased, and the patient was diagnosed with distal renal tubular acidosis. She also had severe dry eye and mouth symptoms, and an SS-A (Ro) antibody test was positive, indicating Sjögren's syndrome. A potassium derivative and sodium bicarbonate was started, and her symptoms improved. The only finding on kidney biopsy was significant fibrosis of the distal tubules. This case suggests a strong relationship between distal renal tubular acidosis findings and distal tubular damage. We report a valuable case in which renal function has been preserved for 20 years after diagnosis without administration of glucocorticoid, but only by electrolyte correction.</p>","PeriodicalId":94146,"journal":{"name":"Modern rheumatology case reports","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}