# Coexistence of Cornual Pregnancy and Placenta Increta: A Report of a Rare Case

**Authors:** Mariana Quilhó Pereira, Inês Tlemçani, Joana Almeida-Tavares, Alexandre Valentim-Lourenço, Luísa Pinto

PMC · DOI: 10.7759/cureus.94201 · Cureus · 2025-10-09

## TL;DR

A rare case of cornual pregnancy combined with placenta increta is reported, highlighting the risk of uterine rupture and the need for careful diagnosis.

## Contribution

This is the first reported case of cornual pregnancy coexisting with placenta increta in a patient without prior uterine surgery.

## Key findings

- A 37-year-old woman was diagnosed with cornual pregnancy and placenta increta without prior uterine surgery.
- Surgical exploration confirmed uterine rupture and histopathology confirmed the coexistence of cornual pregnancy and placenta increta.
- The case emphasizes the need for high suspicion of PAS in atypical presentations to prevent complications.

## Abstract

Placenta accreta spectrum (PAS) comprises abnormal placental adherence to the uterine wall, typically associated with prior cesarean or other uterine surgery. Cornual pregnancies are a rare form of ectopic gestation, associated with a high risk of uterine rupture.

We describe the case of a 37-year-old woman with no prior uterine surgeries, who was diagnosed with a cornual pregnancy associated with placenta increta. Ultrasound findings included fetal malformations and signs of placental invasion. After fetal demise and termination, surgical exploration revealed a uterine rupture at the right cornua. The histopathological examination confirmed a cornual pregnancy with placenta increta. This case underscores the importance of maintaining a high index of suspicion for PAS in atypical clinical contexts, particularly when coexisting with cornual pregnancy, due to the elevated risk of uterine rupture.

## Linked entities

- **Diseases:** cornual pregnancy (MONDO:0044101), placenta increta (MONDO:0005916)

## Full-text entities

- **Diseases:** fetal malformations (MESH:D000013), Cornual Pregnancy (MESH:D065173), Placenta Increta (MESH:D010921), ectopic gestation (MESH:D016640), uterine rupture (MESH:D014597)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

9 references — full list in the complete paper: https://tomesphere.com/paper/PMC12597117/full.md

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Source: https://tomesphere.com/paper/PMC12597117