Figure 2From: Compression of the radial nerve at the elbow by a ganglion: two case reports Sonogram showing a cystic lesion reveals a 0.6 × 0.7 × 1.8 cm hypoechoic mass that is just anterolateral to the radial head. The cystic lesion is likely causing a mass effect against the sensory branch of the radial nerve.Back to article page