Cotton Thaisa, Hudson Marie, Troyanov Yves, Leclair Valérie, Gyger Geneviève
Department of Medicine, McGill University, Montreal, QC, Canada.
Division of Rheumatology, Jewish General Hospital, Montreal, QC, Canada.
SAGE Open Med Case Rep. 2025 Jun 27;13:2050313X251353297. doi: 10.1177/2050313X251353297. eCollection 2025.
Nailfold capillaroscopy is well established in systemic sclerosis; however, abnormalities (scleroderma or scleroderma-like patterns) are identified in other connective tissue diseases, such as myositis, even in the absence of Raynaud's phenomenon. Although this may be known within the rheumatology world, myositis cases often present to other subspecialists who may be unfamiliar with the value of capillaroscopy. We present four cases of myositis that initially presented to non-rheumatology subspecialists where capillaroscopy played a role in confirming the diagnosis. Nailfold capillaroscopy is especially useful in cases of isolated interstitial lung disease, atypical and isolated rashes, and to delineate between myositis mimickers, whether pathologic or clinical. It is a noninvasive tool, which is useful early in the work-up of myositis to identify features consistent with a connective tissue disease.
甲襞毛细血管镜检查在系统性硬化症中已得到广泛应用；然而，在其他结缔组织疾病，如肌炎中也可发现异常（硬皮病或硬皮病样模式），即使没有雷诺现象。尽管这在风湿病学界可能已为人所知，但肌炎病例常被转诊至其他专科医生处，而这些医生可能不熟悉毛细血管镜检查的价值。我们报告了4例肌炎病例，这些病例最初由非风湿病专科医生诊治，而毛细血管镜检查在确诊中发挥了作用。甲襞毛细血管镜检查在孤立性间质性肺疾病、非典型和孤立性皮疹病例中特别有用，并且有助于区分肌炎的模仿者，无论是病理上还是临床上的。它是一种非侵入性工具，在肌炎的早期检查中有助于识别与结缔组织疾病一致的特征。
