<prompt> A 30 years old man presents with cramping gluteal pain after walking 500 meters. Which is the vessel involved?Aerial disease with aoo-iliac involvementAerial disease with femoral aery involvementFemoral venous insufficiencySaphenous venous insufficiency  <response>: Aoo-iliac disease - Tissue distal to aery occlusion becomes ischemic - as this aery supplies muscles - causes Intermittent claudication like Buttock, thigh, calf claudication andLeriche syndrome - Erectile dysfunction - Impotence 