Digital Mucous Cyst
Digital Mucous Cysts are really outpouchings of the synovial joint space of the distal interphalangeal joint. They are incredibly common in the older age groups, are almost always associated with DIPJ osteoarthritis, and are, of course, benign. They often cause a groove or depression in the nail plate as a result of pressure on the nail matrix, and they are usually asymptomatic. They are largely of cosmetic consequence only. At MIMA, if they require treatment, we send them to a hand surgeon.
Many of you picked a synonym for DMCs, and they are allowed. Happy weekend, Happy Passover and Happy Easter, everyone!