Fibroma sinovial como causa atípica de síndrome de túnel del carpo: presentación de 2 casos clínicos

The fibroma of tendon sheath (FTS) is a benign tumour that can be found in the hand, being more likely in the flexor sheaths. This can behave like a space occupying lesion (SOL), which can compress nerves, such as carpal tunnel, causing a carpal tunnel syndrome (CTS). This has only been described on 9 occasions. When CTS is presented unilaterally, a SOL must be ruled out, including the FTS in a differential diagnosis, especially against the giant cell tumour. This is only distinguishable microscopically, thus resection of the mass is essential. The 2 cases described here had different clinical presentations, but with no complications after resection.