Figure 31. Ulnar nerve compressed by hemangioma. Photograph (bottom) shows the area scanned. Transverse (Tr) US scan shows intramuscular hemangioma (arrows) with compression of the ulnar nerve (arrowheads) in a 32-year-old woman complaining of a palpable soft mass in the dorsal aspect of the arm. Sagittal (Sag) color Doppler scan shows hypervascularity in the hemangioma (arrows).