Subcutaneous nodules in a patient with polyarthritis.
D001168:Arthritis / Q000209:etiology*; D014890:Granulomatosis with Polyangiitis / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012218:Rheumatoid Nodule / Q000209:etiology*