Reason: assess for tenosynovitis or other injury History: left hand pain, weakness There is 1.2 x 1.1 x 2.4 cm nonspecific mass adjacent to the flexor tendons (series 1501 image 21, series1401 image 14), most likely ganglion cyst, but other pathology cannot be ruled out. There is mild mass effect on the adjacent flexor digitorum profundus and flexor digitorum superficialis. This lesion slightly extends into the carpal tunnel (series 1501 image 15), and may have mass effect on median nerve, although this is equivocal. We see no increased signal in the tendons to suggest tendinosis. Extensor tendons appear within normal limits. The bone marrow signals are within normal limits. Osseous alignment is anatomic.
Nonspecific lesion adjacent to flexor digitorum tendons, most likely ganglion cyst, but other pathology cannot be ruled out. Contrast enhanced MRI may be helpful for further evaluation.