Yonsei Med J.  2006 Aug;47(4):519-523. 10.3349/ymj.2006.47.4.519.

Malignancies in Korean Patients with Inflammatory Myopathy

Affiliations
  • 1Division of Rheumatology, Department of Internal Medicine, Institute for Immunology and Immunological Disease, BK21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea. yongbpark@yumc.yonsei.ac.kr

Abstract

The aim of this study was to assess the prevalence and the common type of malignancies in Korean patients with polymyositis (PM) and dermatomyositis (DM) and to evaluate the differences of clinical and laboratory findings between patients with malignancy and those without malignancy. Forty-one Korean patients, who were diagnosed as PM or DM, were enrolled in this study. They fulfilled the Bohan and Peter's criteria for a definite diagnosis of PM and DM. Patients with PM were 25 and those with DM were 16. Eleven out of 41 patients (26.8%) had malignancies. The malignancy was diagnosed simultaneously or later in 81.8% of patients with inflammatory myopathy (IM). The breast cancer was the most common malignancy. In this study, forty three years old as a screening age for malignancy had 88.9% sensitivity and 50.2% specificity. The serum levels of creatine kinase (CK) were significantly lower in patients with malignancy than those without malignancy.

Keyword

Dermatomyositis; polymyositis; malignancy

MeSH Terms

Sensitivity and Specificity
Polymyositis/*complications/epidemiology
Neoplasms/*complications/epidemiology
Myositis/*complications/epidemiology
Middle Aged
Male
Korea
Inflammation
Humans
Female
Dermatomyositis/*complications/epidemiology
Creatine Kinase/blood
Aged
Adult

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Dermatomyositis with Diffuse Large B Cell Lymphoma
Eun Jung Jang, Hyoun Ah Kim, Jun Mo Sung, Jin Woo Lee, Eui Kyung Hwang, Hugh Chul Kim, Jae Ho Han, Chang Hee Suh
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