鞍骑形栓子，栓塞于右肺动脉和左肺动脉交叉处。鞍状栓子是猝死原因。具有典型的外观。表面不甚规则，红褐色和灰白色交替出现，形状通常类似血栓所在静脉的轮廓。
Here is a "saddle embolus" that bridges across the pulmonary artery from the heart as it divides into right and left main pulmonary arteries. Such a saddle embolus is a cause for sudden death. This thromboembolus displays the typical gross appearance. The surface is somewhat irregular, and there are areas of pale tan to white admixed with dark red areas. The thrombus often has the outlines of the vein in which it formed.
