CC BY-NC-ND 4.0 · AJP Rep 2023; 13(03): e49-e52
DOI: 10.1055/s-0043-1774727
Case Report

Complete Hydatidiform Mole with a Coexisting Viable Male Fetus Detected by Cell-Free DNA

1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
,
Lauren Kus
1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
,
Kali Stewart
1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
,
Mai He
2   Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
,
Jackson Rowe
2   Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
,
Matthew Brady
1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
,
Katherine Bligard
1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
,
Megan Lawlor
1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
,
Jeannie Kelly
1   Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Washington University School of Medicine, St. Louis, Missouri
› Author Affiliations

Abstract

Complete hydatidiform mole with coexisting fetus (CHMCF) is rare, and diagnosis is challenging due to limited data. Here, we present the case of a patient with noninvasive prenatal test (NIPT) resulting in “likely molar pregnancy” in the second trimester. Subsequent ultrasound confirmed a cystic appearing portion of the placenta. At 22 weeks, the patient delivered a demised fetus and two placentas. Pathology was consistent with CHMCF. This case is the first to show primary detection of a CHMCF with single-nucleotide polymorphism (SNP)-based NIPT prior to ultrasound identification. Our case suggests the use of SNP-based NIPT as an alternative noninvasive method to guide shared decision-making and clinical management for patients with this diagnosis.



Publication History

Received: 07 July 2023

Accepted: 08 August 2023

Article published online:
30 September 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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