Echo-enhanced ultrasound with pulse inversion imaging: A new imaging modality for the differentiation of cystic pancreatic tumours

Figure 1 Cystadenoma at conventional and echo-enhanced ultrasound. A: A tumour at the pancreatic tail (5 cm in diameter) with small cystic areas (small arrows) and thin fibrotic strands; B: Highly vascularized tumour arteries (large arrows) along the fibrotic strands (maximum of contrastation 15 s after injection of the echo-enhancer).

Figure 2 Cystadenoma at conventional and echo-enhanced ultrasound A: A tumour (7 cm in diameter) at the pancreatic tail with large cystic (c) and solid areas (s); B: A poorly vascularized solid (s) tumour (maximum of contrastation 15 s after injection of the echo-enhancer).

Figure 3 Pseudocust at conventional and echo-enhanced ultrasound A: A lesion with an echo-free pattern and a sharply delineated wall. The Wirsungs Duct is dilated; B: A highly vascularized wall (maximum of contrastation 20 s after injection of the echo-enhancer).