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West J Emerg Med. 2014 Sep;15(6):712-4. doi: 10.5811/westjem.2014.5.22508.

Mirror image artifact mimicking heterotopic pregnancy on transvaginal ultrasound: case series.

The western journal of emergency medicine

Radhika Malhotra, Robert M Bramante, Marek Radomski, Mathew Nelson

Affiliations

  1. North Shore University Hospital, Department of Emergency Medicine, Manhasset, New York.
  2. UPMC Shadyside Hospital, Pittsburgh, Pennsylvania.

PMID: 25247050 PMCID: PMC4162736 DOI: 10.5811/westjem.2014.5.22508

Abstract

Vaginal bleeding in early pregnancy is a common emergency department complaint. Point-of-care ultrasound is a useful tool to evaluate for intrauterine ectopic pregnancy. Emergency physicians performing these studies need to be cognizant of artifacts produced by ultrasound technology, as they can lead to misdiagnosis. We present two cases where mirror-image artifacts initially led to a concern for heterotopic pregnancies but were excluded on further imaging.

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