RT Book, Section A1 Go, Michael R. A2 Dean, Steven M. A2 Satiani, Bhagwan A2 Abraham, William T. SR Print(0) ID 1105290169 T1 ARTERIOSCLEROTIC CAROTID OCCLUSIVE DISEASE: OCCLUSION T2 Color Atlas and Synopsis of Vascular Diseases YR 2015 FD 2015 PB McGraw-Hill Medical PP New York, NY SN 9780071749541 LK accesssurgery.mhmedical.com/content.aspx?aid=1105290169 RD 2024/03/19 AB A 50-year-old man presented with a 1-year history of worsening fatigue and bitemporal headaches. He denied focal neurologic symptoms, but complained of constant dizziness which was exacerbated when he went from a lying to a standing position. Sometimes he experienced syncopal episodes, and a complete syncope workup thus far had been negative. Carotid duplex ultrasound suggested chronic occlusion of his left internal carotid artery (ICA), with a 70% to 99% stenosis of his right ICA. Carotid duplex ultrasound also showed elevated velocities in his external carotid arteries (ECAs) bilaterally indicating significant stenosis.