Mucoid cysts of the fingers. Differential diagnosis, ultrastructure, and surgical treatment.

The title "digital mucoid cyst" is generic and encompasses cutaneous myxomas, which are focal intradermic mucinoses that are at times cystic, and ganglia, which are subcutaneous teno-arthro-synovial "hernias." A large myxoma over the second and third phalanges of the middle finger of the left hand is reported that caused progressive functional incapacity. It was managed by surgery, the technique of which is described. The need to differentiate cutaneous myxomas from ganglia is emphasized because the treatment of them is different.