RT Book, Section A1 Aumiller, Benjamin J. A1 Motaganahalli, Raghu L. A2 Dean, Steven M. A2 Satiani, Bhagwan A2 Abraham, William T. SR Print(0) ID 1105290532 T1 ARTERIAL PSEUDOANEURYSMS T2 Color Atlas and Synopsis of Vascular Diseases YR 2015 FD 2015 PB McGraw-Hill Medical PP New York, NY SN 9780071749541 LK accesscardiology.mhmedical.com/content.aspx?aid=1105290532 RD 2024/04/18 AB A 70-year-old obese man underwent cardiac catheterization for coronary stenting. He received dual antiplatelet therapy with the use of glycoprotein inhibitors during the intervention. He presented a week later to his cardiologist with increasing painful groin swelling. He underwent a duplex examination of the groin that demonstrated a pseudoaneurysm (PSA) measuring approximately 4 cm with a long narrow neck and a "Yin-Yang" or "to-and-fro" sign (Figure 34-1A). Doppler evaluation of the neck of the aneurysm demonstrated arterial waveforms (Figure 34-1B).