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What are Nodules?

By Carol & Richard Eustice, About.com

About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD

Definition: A collection of tissue appearing as a knot or knob in the skin, not uncommon in rheumatoid arthritis. Rheumatoid nodules are seen in 20-30% of rheumatoid arthritis patients. They may occur anywhere on the body, but are most often seen over the bony prominences.
Pronunciation: nod-yule
Also Known As: rheumatoid nodules
Common Misspellings: rhuematoid nodules
Examples: There was evidence of a rheumatoid nodule near the elbow.

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