OBJECTIVES:

To describe the clinical characteristics and perinatal outcomes of placental mesenchymal dysplasia.

MATERIALS AND METHODS:

Systematic review of the medical literature under the terms “placental mesenchymal dysplasia”, “partial pseudomole”. Inclusion criteria for the review were: confirmed histological diagnosis and presence of at least 75% of established clinical data. The systematic review was performed by searching for cases or series published in PubMed, EMBASE, Scopus databases. We present 1 clinical case of our institution.

RESULTS:

A total of 202 articles were found, most of them corresponding to clinical cases or case series. Duplicates were discarded and those that did not meet inclusion criteria were excluded. Finally, the series consisted of 88 publications with 104 clinical cases.

CONCLUSIONS:

Placental mesenchymal dysplasia is a poorly understood, underdiagnosed, and poorly published clinical entity. Placental mesenchymal dysplasia echocardiography simulates a partial spring, but usually presents a diploid fetal karyotype and elevated levels of alpha-fetoprotein. It is frequently associated with prematurity, premature rupture of membranes, intrauterine growth retardation, fetal malformations, Beckwith-Wiedemann syndrome and perinatal death.