Figure 2.

a–c. CEUS depicted internal mammary artery before percutaneous biopsy of an anterior mediastinum lesion in a 35-year male. Gray-scale US detected a homogenous hypoechoic anterior mediastinum lesion, internal mammary artery (arrow) was suspected in the peripheral part of the lesion (a). After injection of SonoVue®, the internal mammary artery was rapidly and obviously enhanced (arrow). The enhancement began approximately at 11 s (b). After CEUS, 16 G coarse needle percutaneous biopsy was performed successfully in the active areas of the lesion (arrow). The internal mammary artery was avoided during the real-time US guidance (c).