bone lesion AE rheumatoid nodule AE This is an AE which is a lump of tissue, or an area of swelling, that appear on the exterior of the skin usually around the olecranon (tip of the elbow) or the interphalangeal joints (finger knuckles), but can appear in other areas. 10048694 类风湿结节 http://en.volupedia.org/wiki/Rheumatoid_nodule QY, JX, HY