Isolated polydactyly: prenatal diagnosis and perinatal outcome

Area of Science:

• Medical Imaging
• Prenatal Diagnosis
• Genetics

Background:

• Polydactyly, a common congenital anomaly, involves an extra digit on the hands or feet.
• Isolated polydactyly, without other associated anomalies, requires careful evaluation for clinical significance.
• Prenatal sonography is crucial for early detection and assessment of fetal anomalies.

Purpose of the Study:

• To assess the clinical significance of isolated polydactyly diagnosed during prenatal sonography.
• To determine the perinatal outcomes and associated conditions in fetuses with isolated polydactyly.
• To evaluate the reliability of prenatal ultrasound in identifying isolated polydactyly.

Main Methods:

• Retrospective review of sonographic data over an 11-year period.
• Identification of patients with isolated polydactyly on prenatal ultrasound.
• Detailed clinical surveys, medical record reviews, and parent/physician follow-up for outcome assessment.

Main Results:

• Twelve cases of isolated polydactyly were confirmed postnatally.
• The majority of cases were identified before 23 weeks of gestation.
• No surviving neonates had other malformations or karyotypic abnormalities; ten of twelve fetuses had good perinatal outcomes.

Conclusions:

• Isolated polydactyly detected by prenatal sonography is typically associated with a favorable perinatal outcome.
• Prenatal diagnosis of isolated polydactyly does not necessitate further invasive testing in most cases.
• This finding supports the benign nature of isolated polydactyly when identified prenatally.