Distortion of the radial artery by a mucinous cyst: Case reports

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Three cases of mucinous cyst situated close to the radial artery are reported. The patients complained of pain, a throbbing mass, or both at the wrist. Colour Doppler sonography showed distortion of the radial artery by the cyst in all three patients. In one patient the cyst was connected to a synovial sac by a pedicle, in another it was adherent to the radial artery but was identified histopathologically as a simple ganglion, and in the last patient a branch of the radial artery was involved in the cyst, which was identified histopathologically as an adventitial cyst. Mucinous cysts enlarge when subjected to mechanical stress. Excision is recommended for cysts that distort the radial artery.

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