Application of four-section approach for prenatal diagnosis of Pierre robin sequence.

ABSTRACT:

Purpose

This study aimed to evaluate the effectiveness of the four-section approach using two-dimensional sonography in diagnosing Pierre Robin sequence (PRS) during second-trimester screening.

Methods

A prospective study was conducted on low-risk pregnant women undergoing routine mid-trimester screening. Cases with suspected micrognathia prenatally were included and examined using the four-section approach. Initially, we measured the inferior facial angle (IFA) for fetuses suspected of having micrognathia. Subsequently, in the oblique coronal section via the oral fissure, we examined the continuity of the hard and soft palate line. Finally, dynamic scanning of both the sagittal and coronal sections of the mandible was performed to confirm whether the echogenic tongue was di

SUBMITTER: Li X 

PROVIDER: S-EPMC12634787 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature