• Yi Yan, Yong Jia, Belinda Lategan, Zarine Alexander, Alaa Awadalla, and Ashraf Goubran.
• Department of Radiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
• Medicine (Baltimore). 2022 Nov 25; 101 (47): e31629e31629.

IntroductionAcquired uterine arteriovenous malformation (uAVM) is a rare disease and could occur after dilation and curettage, cesarean section, or neoplastic processes.Patient ConcernsA 29-year-old female presented with acute right lower abdominal pain and positive beta human chorionic gonadotropin (β-hCG).DiagnosisA 6 cm ectopic right cornual pregnancy was found on ultrasound examination.InterventionsShe underwent a laparoscopic resection of the cornual ectopic pregnancy. She returned with extensive vaginal bleeding 6-month post surgery, and eventually diagnosed with arteriovenous malformation at the previous surgical site by Color Dopplor endovaginal ultrasound. Percutaneous transcatheter uterine artery embolization (UAE) was attempted, however, vaginal bleeding continued. She was taken to the operation room for a hysteroscopic ablation of uAVM.OutcomesComplete cessation of the bleeding was achieved without hysterectomy.ConclusionWe report an extremely unusual case of acquired uAVM after a wedge resection of cornual pregnancy. Ultrasound evaluation of patients with post-operative persistent bleeding should be considered for evaluation of a possible arteriovenous malformation.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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