This kind of embolus can come from the excrescence of rheumatism sex heart disease, also may be the adipose embolus when fracture, or air enters blood to cause gas bolt, or tumor cell falls off form tumor embolism to wait a moment.

• 这种栓子可来自风湿性心脏病的赘生物，也可能是骨折时的脂肪栓子，或空气进入血液引起气栓，或肿瘤细胞脱落形成肿瘤栓塞等等。