# Maternal-fetal complications of non-immune fetal hydrops – mirror syndrome and hypereactio luteinalis with ovarian torsion: A case report

## TL;DR

A rare case of maternal-fetal complications involving fetal arrhythmia, mirror syndrome, and ovarian torsion is reported, highlighting the challenges in managing these conditions.

## Contribution

The paper presents a rare clinical association of mirror syndrome with hypereactio luteinalis and ovarian torsion.

## Key findings

- Fetal supraventricular tachycardia led to fetal hydrops and intrauterine fetal demise.
- Mirror syndrome developed in the mother, requiring clinical vigilance.
- Hypereactio luteinalis with ovarian torsion was surgically managed.

## Abstract

Mirror syndrome, previously referred to as Ballantyne's syndrome, is a rare obstetric disorder characterized by maternal edema in association with fetal hydrops and placental edema. This report concerns the case of a 35-year-old multiparous woman who developed mirror syndrome secondary to fetal supraventricular tachycardia complicated by hydrops and intrauterine fetal demise. Her pregnancy was further complicated by hypereactio luteinalis with ovarian torsion requiring surgical detorsion. The case highlights the challenges of managing maternal and fetal hydrps, and its rare association with hypereactio luteinalis.

•This report concerns a rare case of fetal arrhythmia leading to fetal and maternal hydrops.•The patient subsequently developed maternal mirror syndrome.•Unusual association with ovarian hypereactio luteinalis, resulting in ovarian torsion.•The case highlights the rare association of HL with fetal and maternal hydrops, and the need for clinical vigilance over the potential to develop severe and acute mirror syndrome.

This report concerns a rare case of fetal arrhythmia leading to fetal and maternal hydrops.

The patient subsequently developed maternal mirror syndrome.

Unusual association with ovarian hypereactio luteinalis, resulting in ovarian torsion.

The case highlights the rare association of HL with fetal and maternal hydrops, and the need for clinical vigilance over the potential to develop severe and acute mirror syndrome.