Giant chorioangiomas: perinatal outcomes and techniques in fetoscopic devascularization

Area of Science:

• Perinatology
• Maternal-Fetal Medicine
• Fetal Surgery

Background:

• Giant placental chorioangiomas (>4 cm) pose significant risks to pregnancy.
• These tumors can lead to severe obstetrical complications, impacting fetal well-being.

Purpose of the Study:

• To assess intrauterine management strategies for giant placental chorioangiomas.
• To evaluate perinatal outcomes and explore various devascularization techniques.

Main Methods:

• Retrospective review of 10 cases of giant placental chorioangioma (2005-2012).
• Analysis of maternal demographics, prenatal imaging, treatment response, and perinatal outcomes.
• Evaluation of fetoscopic devascularization techniques including bipolar coagulation, laser, radiofrequency ablation, and clip application.

Main Results:

• Overall survival rate was 80%.
• Common complications included polyhydramnios, non-immune hydrops, and high cardiac output state.
• Fetoscopic devascularization in 5 patients at 24 weeks' gestation resulted in 80% survival, with resolution of hydrops and high cardiac output states.

Conclusions:

• Fetoscopic devascularization is a crucial intervention for managing giant placental chorioangiomas with high cardiac output states or non-immune hydrops.
• Multiple devascularization techniques may be necessary to effectively treat these complex cases.