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| Synovial Cyst Myxoid Cyst | Cyst, Myxoid | Cyst, Synovial | Cysts, Myxoid | Cysts, Synovial | Myxoid Cysts | Synovial Cysts A nodular, tumorlike lesion in or about a tendon sheath or joint capsule, especially of the hands, wrists, or feet. It is not a true cyst as it lacks an epithelial wall, and it does not communicate with the underlying synovial space. The lesion represents a focal accumulation of mucin in the dermis of the dorsal aspect of the distal phalanges or, less often, other portions of the extremities. |