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Remitting seronegative symmetrical synovitis with pitting edema (abbreviated RS3PE or sometimes RS3PE) is a rare syndrome identified by symmetric polyarthritis, synovitis, acute pitting edema (swelling) of the back of the hands and/or feet, and a negative serum rheumatoid factor. If no underlying disorder can be identified (idiopathic RS3PE), this entity has an excellent prognosis and responds well to treatment. RS3PE typically involves the joints of the extremities, specifically the metacarpophalangeal and proximal interphalangeal joints, wrists, shoulders, elbows, knees and ankles.〔 It is more common in older adults, with the mean age between 70 and 80 years in most studies.〔 It occurs more often in men than in women with a 2:1 ratio.〔 It is unknown how common this condition is. ==Signs and symptoms== Individuals affected by RS3PE typically have repeated episodes of inflammation of the lining of their synovial joints and swelling of the end portion of the limbs. The arms and hands are more commonly affected than the legs and feet.〔 Both sides are usually involved though RS3PE can affect only one side in certain cases.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Remitting seronegative symmetrical synovitis with pitting edema」の詳細全文を読む スポンサード リンク
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