A 61-year-old right-handed man presented with a 2.5-cm subcutaneous mass to the dorsal radial aspect of the right long finger at the proximal interphalangeal joint.
A 61-year-old right-handed man presented with a 2.5-cm subcutaneous mass to the dorsal radial aspect of the right long finger at the proximal interphalangeal joint.
A 61-year-old right-handed man...