To summarize the ultrasonoimagedata features of artery pseudoaneurysm of the fallopian tube, and evaluate the value of ultrasound in its treatment.

Ultrasound images and clinical data of five patients with artery pseudoaneurysm of the fallopian tube admitted to our hospital from January 2018 to August 2022 were collected and analyzed.

All the cases were pathologically confirmed to be secondary to tubal ectopic pregnancy; four cases were tubal ampulla pregnancy and one case was interstitial tubal pregnancy. On gray-scale ultrasonography, the artery pseudoaneurysm of the fallopian tube manifested as a mass with a fluid sonolucent area outside the uterus or wrapped in the muscle layer of the cornua uteri, and the gestational sac was seen beside the fluid sonolucent area in two cases. Blood flow leaking into the false cavity directly was seen on color Doppler. Pulse Doppler revealed an arterial blood flow spectrum with high speed and low resistance index. Three cases were diagnosed during the rising stage of serum human chorionic gonadotropin (hCG), while two cases were diagnosed during the descent phase of serum hCG.

Artery pseudoaneurysm may be another risk factor for rupture of tubal ectopic pregnancy, and its healing and endometrial degeneration are two different processes. It should be alert that artery pseudoaneurysm could rupture even when hCG is negative. Ultrasonography is effective in detecting artery pseudoaneurysm.