The said sound image and pathological section display that the low echo structure belongs to scar tissue.
瘢痕显示在声像图上呈低回声结构，在病理切片符合为瘢痕组织。
Ultrasonic manifestations of lesion were mostly low echo induced by not rich blood flow, especially in hepatic portal and left lobe.
病灶多表现为血流不丰富的低回声，尤以肝门部和肝左叶者明显。
The tumor displayed the character of low echo (21/32), obscure boundary(22/32), vascular invasion (26/32), pancreatic duct and common bile duct dilation (19/36).
结果超声内镜下胰头癌主要表现为边界不清晰（22/32）的低回声（21/32），伴有胆总管和胰管的扩张（19/36）、血管的侵犯（26/32）；
The tumor displayed the character of low echo (21/32), obscure boundary(22/32), vascular invasion (26/32), pancreatic duct and common bile duct dilation (19/36).
结果超声内镜下胰头癌主要表现为边界不清晰（22/32）的低回声（21/32），伴有胆总管和胰管的扩张（19/36）、血管的侵犯（26/32）；
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