假性动脉瘤(pseudoaneurysm,PSA)指动脉管壁撕裂或穿破,血液流出后被动脉邻近组织包裹形成血肿,血肿机化后形成外壁,血肿腔内面为动脉内膜细胞延伸形成的内膜。假性动脉瘤一般由外伤、医源性损伤所致,而先天性动脉瘤破裂较少见,现报道1例。1案例资料简要案情某男,66岁,2009年1 Artery aneurysm (pseudoaneurysm, PSA) refers to the tear or perforation of the arterial wall, the blood flow out of the surrounding tissue surrounded by the formation of hematoma hematoma, hematoma machine to form the outer wall, the inner surface of the hematoma cavity for the formation of intimal cells extending intima . Pseudoaneurysm generally caused by trauma, iatrogenic injury, and rupture of congenital aneurysms is rare, is reported in 1 case. 1 case information brief case a man, 66 years old, 2009 1