title: [A man with swollen fingers].
abstract: A 28-year-old man was referred to our hospital because of localised swelling of his fingers, with suspicion of arthritis of the proximal interphalangeal (PIP) joints. At physical examination we observed a swelling, superficial to the PIP joints. Ultrasonography revealed a hypo-echoic structure above the extensor tendon, typical for knuckle pads.
authors: Sint Maartenskliniek, Nijmegen.
authors: Henk A
authors: HA
authors: Martens
authors: Steven C
authors: SC
authors: van Bokhoven
mesh_terms: D000328:Adult; D001168:Arthritis / Q000175:diagnosis; D005350:Fibroma / Q000175:diagnosis*; D005385:Fingers / Q000473:pathology*; D006801:Humans; D008297:Male; D008662:Metacarpophalangeal Joint / Q000473:pathology*