IntroductionDegenerative aneurysms of deep femoral arteries are extremely rare, accounting for 1-2.6% of all femoral artery aneurysms(1). They are difficult to diagnose in the early stage and found in large size at presentation because they are located deeply and covered by several muscles(2). Deep femoral artery aneurysm (DFAA) can cause complicated conditions such as rapid expansion, rupture, and acute lower limb ischemia due to distal embolism of thrombus. Repair is always recommended for DFAA because of the possibility of those complications(3). We herein report either surgical or endovascular treatment of three cases of DFAA.