Focal myositis is a rare, benign inflammatory pseudotumor of the skeletal muscle of unknown etiology. In Korea, there is no case report of focal myositis, which is not combined with connective tissue disease. We present an unusual case of focal myositis with ankle contracture, involving more than two muscles. A 26-year-old man visited our clinic complaining of right ankle contracture and leg mu...

BACKGROUND Erythema infectiosum is the most common clinical manifestation of Parvovirus B19 infection although it has also been associated with rheumatologic diseases and various types of systemic vasculitides. Acute hepatitis and benign myositis however are rarely reported in association with Parvovirus B19 infection. CASE PRESENTATION Here we report a 14-year old male, who developed acute h...

BACKGROUND TNF-alpha is suggested to be involved in muscle damage and muscle inflammation (myositis). In order to evaluate whether TNF-alpha is involved in the myositis that occurs in response to muscle overuse, the aim was to examine the expression patterns of TNF receptors in this condition. METHODS A rabbit muscle overuse model leading to myositis in the soleus muscle was used. The express...

BACKGROUND To investigate the association between myositis autoantibodies and clinical subsets of inflammatory myositis in Korean patients. METHODS Immunoprecipitation was performed using the sera of classic polymyositis (PM) (n = 11) and dermatomyositis (DM) (n = 38) patients who met the Bohan and Peter criteria for definite inflammatory myositis. A panel of defined myositis autoantibodies w...

INTRODUCTION Myositis ossificans is a benign, self-limiting condition that usually affects young, athletically active men. To the best of our knowledge, this case report describes the oldest recorded patient with myositis ossificans. CASE PRESENTATION Our patient was an 83-year-old Japanese woman who presented with a one week history of a palpable mass in the left thigh. She had a history of ...

plastic formation of heterotopic bone in the skeletal muscle (1-5). Although myositis ossificans can occur anywhere in the body following trauma, it is predominantly localized to high-risk sites of injury, such as large muscles of the extremities (2-4). Most lesions are related to direct major trauma or repeated minor injuries. No history of trauma is present in approximately 40% of patients (2...

Historically, first case of TP was described by Scriba in 1885, though some authors believe that Virchow was the first one to describe this entity. Since TP was predominantly seen in tropics, various terms like tropical pyomyositis, myositis tropicans, and tropical myositis are used, but nowadays this entity is no longer confined only to tropics. Levine in 1971, reported the first case of TP fr...

INTRODUCTION Myositis ossificans is a benign, self-limiting, tumor-like lesion that usually affects the elbow and thigh; occurrence in the hand is uncommon. We report a rare case of a patient with myositis ossificans in the thenar region. CASE PRESENTATION A 15-year-old Japanese girl presented to our hospital with a 2-month history of a painful mass in the right thenar region without previous...

Chronic inflammation of skeletal muscle tissues, termed myositis, is associated with inherited muscular dystrophy and acquired inflammatory myopathy. In this review, the role of the organic osmolytes taurine, betaine, myo-inositol, and sorbitol in skeletal muscles in general, and in myositis in particular, is discussed. Evidence indicates that regulated osmolyte pathway activation contributes t...

INTRODUCTION Recurrent myositis triggered by infections is unusual, with only one other case reporting two attacks described in the literature. CASE PRESENTATION We report the case of a 24-year-old Caucasian woman with recurrent myositis triggered by sore throat, respiratory and urinary tract infections, over the past 18 years, up to four times a year. Myositis of this frequency and duration,...