类风湿结节皮下结节仍是类风湿性关节炎(RA)最为人们熟知的关节外表现。20～30％患RA的成人表现出皮肤类风湿结节。其特点是在皮下组织有坚实、肤色、无压痛、半球形团块。最好发的部位是前臂伸侧,特别是肘部,任何皮下部位,特别是易受损伤的部位,如 Rheumatoid Nodules Subcutaneous nodules are still the most well known extra-articular manifestations of rheumatoid arthritis (RA). 20 to 30% of adults with RA exhibit cutaneous rheumatoid nodules. It is characterized by a solid subcutaneous tissue, color, no tenderness, hemispherical lumps. The best part is the extensor side of the forearm, especially the elbow, any subcutaneous site, especially vulnerable to injury, such as