title: Epidermoid cysts simulating rheumatoid nodules in the olecranon region.
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis / Q000473:pathology; D005260:Female; D006652:Histological Techniques; D006801:Humans; D008297:Male; D008875:Middle Aged; D012218:Rheumatoid Nodule / Q000175:diagnosis* / Q000473:pathology; D014457:Ulna