Abstract
Implantation epidermoid cysts have been reported after a variety of surgical procedures. Although carpal tunnel surgery is the most common peripheral nerve operation, there have been no previous reports of these cysts after carpal tunnel decompression. We present a case of an implantation epidermoid cyst after carpal tunnel surgery. A 41-year-old man presented with recurrence of carpal tunnel syndrome and an enlarging mass at the site of his previous carpal tunnel decompression. The operation site was re-explored, and a subcutaneous mass was removed. This was histologically shown to be an implantation epidermoid cyst. The possibility of an implanted epidermoid cyst should be considered in any patient who presents with a recurrence of carpal tunnel symptoms and a mass at the site of the previous operation. It is possible that the occurrence of these cysts may be related to the use of polyglactin sutures for wound closure. In this case, the result of surgery was excellent.
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