A myxoid (MIX-oid), or digital mucous cyst, is a benign bump that can occur on the top of the finger between the nail and last joint. Nobody knows exactly why it arises. It appears as a smooth, shiny, ...

Digital mucous cysts (DMCs) are relatively common benign cysts of the digits, occasionally involving the nail matrix and nail fold. First described as “synovial lesions of the skin” by Markin and ...