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Case Reports
. 2022 May 1;41(3):251-257.
doi: 10.1097/PGP.0000000000000786. Epub 2021 Apr 1.

Association of Placental Mesenchymal Dysplasia With a Live Female Fetus and Complete Hydatidiform Mole: Report of a Challenging Case Confirmed by Molecular Genotyping Analysis

Aymeric Hamard, Anne Heitzmann, Claire Ceccaldi, Céline Descriaud, Claire Mauduit, Lucie Gaillot-Durand, Touria Hajri, Jérôme Massardier, Roselyne Vinas, Fabienne Allias
Case Reports

Association of Placental Mesenchymal Dysplasia With a Live Female Fetus and Complete Hydatidiform Mole: Report of a Challenging Case Confirmed by Molecular Genotyping Analysis

Aymeric Hamard et al. Int J Gynecol Pathol. .

Abstract

Placental mesenchymal dysplasia (PMD) and complete hydatidiform mole (CHM) with a coexisting fetus are 2 rare placental abnormalities characterized by lacunar placenta and presence of an embryo on ultrasound examination. We report the case of a 34-yr-old woman referred at 32.6 weeks of gestation because of a multicystic placenta. A caesarean section was performed at 39.1 weeks of gestation giving birth to a 2905 g normal female infant. Pathological examination revealed macroscopic and microscopic morphological, and immunohistological features of PMD in the main placenta, and features of CHM in a separate placental mass. Fluorescent in situ hybridization and molecular genotyping analyses showed diandric diploidy in the CHM component and androgenetic/biparental mosaicism in the PMD component, confirming the association of PMD and CHM with a live infant. There was no progression to gestational trophoblastic neoplasia during follow-up for the mother, or any sign of Beckwith-Wiedemann syndrome or hepatic tumor in the child.

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Conflict of interest statement

The authors declare no conflict of interest.

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