Fig. 3From: Radial nerve palsy caused by a rapidly growing intramuscular hematoma in an infant with biliary atresia: a case reportCoronal (a) and axial (b) magnetic resonance images of the left upper arm. The arrows indicate a hematoma in the triceps brachii. No changes in signal intensity were observed in the subcutaneous tissue. The radial nerve was not clearly visualized. c and d Ultrasonographic images of the abdomen. The arrow in c indicates the gallbladder (diameter, 7.5 mm). The arrow head in d indicates the triangular cord sign anterior to the bifurcation of the portal veinBack to article page