摘要
目的：描述肺栓塞的一种罕见形态学表现。病例报道：1例成年男性因在家中虚脱后入院，不久便被宣布死亡。该患者除BMI为34、吸烟和近期胸部感染刚出院以外，无血栓栓塞的易感因素、危险因素或表现。尸检发现死亡系肺栓塞合并小腿深静脉血栓形成所致。极其意外的是，在该肺血栓栓塞的上（头）端发现一结节。结论：本文是首次描述肺栓塞结节的病例报道，推测这种现象只可能在大静脉或穿经右心时出现。
Aim： To describe an unusual morphological appearance of a pulmonary thromboembolus. Case report： An adult male was admitted following a collapse at home and certified dead soon after. There was no past history of thromboembolic predisposition, risk or phenomena apart from a BMI of 34, cigarette smoking and recent discharge from hospital following a chest infection, Postmortem findings were those of death due a pulmonary thromboembolus complicating deep（calf） vein thrombosis. Unusually and unexpectedly, a knot was found in the leading（head） portion of this thromboembolus. Conclusion： We describe the first reported case of a knot in a thromboembolus and speculate that this could only have occurred in the larger veins or during its course through the right side of the heart.
