DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Post-operative scar (bright pink) on a 68-year-old woman's elbow. The operation was to remove a nodule that formed due to rheumatoid arthritis. Rheumatoid arthritis is a condition where the body's immune system attacks the joints. It can result in nodules forming under the skin. The nodules can be excised if they are excessively large.
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