Subcutaneous rheumatoid nodules.

Subcutaneous nodules in Henoch-Schönlein purpura

“…Pressure is reported to be a factor in the subcutaneous nodules associated with rheumatoid arthritis [3,6,7] and benign rheumatoid nodule [20,22,24]. The olecranon process is a location subject to repeated external trauma and it is likely that pressure also played a role in the formation of subcutaneous nodules in the patient we report.…”

“…Subcutaneous nodules in patients with vasculitis are caused by vasocentric or extravascular cutaneous and subcutaneous inflammation [2] and are reported in a variety of conditions, including rheumatoid arthritis [3][4][5][6][7], rheumatoid nodulosis [3], rheumatic fever [8][9][10][11], hypersensitivity vasculitis [12], systemic lupus erythematosus [13][14][15], polyarteritis nodosa [16][17][18], scleroderma [19], and benign rheumatoid nodule [20][21][22][23][24].…”