Color Doppler imaging has been used to evaluate a variety of abnormalities in the iliofemoral region. This pictorial essay demonstrates how use of color Doppler techniques aids in the diagnoses of iliofemoral pseudoaneurysms, fluid collections, aneurysms, arteriovenous fistulas and malformations, venous thrombosis, vascular grafts, and soft-tissue masses including tumors and benign lymphadenopathy.