A Venous Pseudoaneurysm With an Unconventional Respirophasic Spectral Doppler Waveform in the Neck of the Pseudoaneurysm: Case Report

Abstract

A pseudoaneurysm is a vascular complication, often resulting from an injury or an invasive procedure, caused by the puncture of a vessel wall. The identification of a pseudoaneurysm can be confirmed by recognition of the bidirectional “to-and-fro” spectral Doppler waveform in the neck and the internal “Yin-Yang” color Doppler. This case study illustrates that this confirmation applies only to an arterial pseudoaneurysm, a pseudoaneurysm arising from a vein with a pulsatile Doppler waveform, such as a jugular vein or an arteriovenous fistula for hemodialysis. This case study introduces a venous pseudoaneurysm arising from the distal femoral vein without any history of a prior injury or an invasive procedure. It also differentiates it from one arising from an artery or a vein that exhibits pulsatile Doppler waveform.