remitting seronegative symmetrical synovitis with pitting edema
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/11/21 20:40:47」(JST)
RS3PE (Remitting Seronegative Symmetrical Synovitis with Pitting Edema)は、おそらく自己免疫性の機序を持つ関節炎疾患の一つである。適切な日本語訳はない。1985年にJAMAにマッカーティーらによる複数の症例報告が発表された。彼らはRS3PEと略称される表現を用いた。[1]
文字通り、寛解性、対称性で、リウマチ因子や抗核抗体は陰性であり、関節痛部位に強い圧痕性浮腫を伴う疾患で、患者は通常高齢である。急性の発症経過は特徴的で、短期間で完成する多発関節炎症状はしばしば診断の糸口となる。治療としては、少量の経口ステロイド投与などがおこなわれる。それらの臨床像や治療経過から、リウマチ性多発筋痛症の一症状ではないかとの考え方もある。[2]一部の患者ではその後関節リウマチへと進行する。時に腫瘍随伴症候群として出現することがあり、全身検索を行い悪性腫瘍の存在を除外する必要がある。
通常プレドニゾロン10-15mg/dayで治療を開始する。側頭動脈炎合併例では20mg/day以上で治療を開始することが多い。
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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.[1] If no underlying disorder can be identified (idiopathic RS3PE), this entity has an excellent prognosis and responds well to treatment.[2]
RS3PE typically involves the joints of the extremities, specifically the metacarpophalangeal and proximal interphalangeal joints, wrists, shoulders, elbows, knees and ankles.[3] It is more common in older adults, with the mean age between 70 and 80 years in most studies.[3][4] It occurs more often in men than in women with a 2:1 ratio.[3][5][6] It is unknown how common this condition is.
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.[7] The arms and hands are more commonly affected than the legs and feet.[7] Both sides are usually involved though RS3PE can affect only one side in certain cases.[7]
RS3PE is a constellation of symptoms that can be caused by many other conditions. Since there is no definitive diagnostic test, other conditions have to be ruled out before this rare condition can be diagnosed.
The main differential diagnosis is polymyalgia rheumatica (PMR), although pain, stiffness and weakness at the level of the shoulders and pelvic girdle with associated systemic symptoms (fever, malaise, fatigue, weight loss) is more typical of PMR. Prospective studies have found a subgroup of PMR patients with hand edema, as well as other similarities.[4] Thus, RS3PE has been proposed as a condition related to PMR or even that they are both part of the same disorder.[4] However, PMR typically requires protracted courses of steroids, whereas corticosteroids can be tapered more quickly with persisting remission in RS3PE.[4]
Other rheumatological disorders that can cause the features typical for RS3PE include late onset (seronegative) rheumatoid arthritis, acute sarcoidosis, ankylosing spondylitis and other spondyloarthropathies such as psoriatic arthropathy, mixed connective tissue disease, chondrocalcinosis and arthropathy due to amyloidosis.[5][8]
RS3PE has been documented in patients with cancers (Non-Hodgkin's lymphoma, gastric cancer, pancreatic cancer, lung cancer, breast cancer, colon cancer, prostate cancer and bladder cancer, among others), in whom it might represent a paraneoplastic manifestation.[9][10][11] Other underlying disorders include vasculitides such as polyarteritis nodosa.[7]
Other causes of edema include heart failure, hypoalbuminemia, nephrotic syndrome and venous stasis. The key distinguishing feature is that these conditions don't tend to manifest with pitting edema at the back of the hands.
The disease mechanism (pathophysiology) of RS3PE remains unknown. One study suggested a possible role for vascular endothelial growth factor.[12] A study using magnetic resonance imaging found that tenosynovitis of the extensors of the hands and feet is the major contributor to edema.[13]
Ultrasonography and magnetic resonance imaging of the hands and/or feet have been proposed as useful diagnostic investigations in RS3PE.[14]
Some studies linked RS3PE to HLA-B27 whereas others have not.
RS3PE responds excellently to low dose corticosteroids, with sustained and often complete remission. Non-steroidal anti-inflammatory drugs (NSAIDs) have also been used. Hydroxychloroquine has proven effective in some cases.[5]
In a 1985 paper published in the Journal of the American Medical Association, McCarty and colleagues first described a case series of patients with this disorder, for which they coined the abbreviation RS3PE.[15] RS3PE was initially thought to represent a form of seronegative rheumatoid arthritis but is now believed to be a separate syndrome.[7]
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リンク元 | 「浮腫」 |
拡張検索 | 「RS3PE症候群」 |
圧痕性浮腫 | 非圧痕性浮腫 | ||
pitting edema | nonpitting edema | ||
病態 | 水のみが間質に貯留 圧痕を残す |
水分+血漿由来物質の蓄積(ムコ多糖、蛋白質)・炎症細胞の浸潤 圧痕を残さない | |
疾患 | fast edema | slow edema | 甲状腺機能低下症 局所性炎症(蜂窩織炎、虫さされ) 強皮症 |
低アルブミン血症 | 心不全 腎不全 |
.