성인 피부근염 환자 52명의 임상적 분석

Background: Dermatomyositis is one of the idiopathic inflammatory myopathies, characterized by unique cutaneous features. Unfortunately, there is little data regarding the clinical features of dermatomyositis in Korea patients. Objective: The study aimed to analyze the clinical features of Korean patients with adult-onset dermatomyositis. Methods: A total of 52 patients from 2002 to 2016 were analyzed retrospectively. Clinical features such as sex, age, symptoms, associated connective tissue disorders and malignancy were studied using medical records. Results: The mean onset age was 43.4 years, and the male to female ratio was 1 : 1.9. Forty-two patients (80.8%) were classified as having dermatomyositis, and 8 patients (15.4%), as having amyopathic dermatomyositis. Skin rash (94.2%) was the most common clinical feature, followed by proximal muscle weakness (61.5%), itching (55.8%), arthralgia (36.5%), and muscle pain (32.7%). Among skin rashes, symmetric violaceous erythema (67.3%) was the most frequent, followed by heliotrope rash (63.5%) and Gottron’s papule (59.6%). Serum aldolase level was elevated in 77.8%, and LDH in 69.6%. The prevalence of malignancy (23.1%) was similar to that in previous studies. Cervical cancer made up 25% (3/12) of the associated malignancies, followed by ovarian cancer and lung cancer (16.7%). Ten patients (19.2%) had other accompanying connective tissue diseases. Conclusion: To date, this is the first large-scale case study that analyzed the clinical features of Korean patients with adult-onset dermatomyositis. (Korean J Dermatol 2018;56(1):24∼29)