Echocardiographic-anatomical correlations in aorto-left ventricular tunnel

Area of Science:

• Cardiovascular Medicine
• Developmental Biology
• Medical Imaging

Background:

• Previous research focused on clinical features and embryology of aorto-left ventricular tunnel.
• Studying fetal cases offers a unique perspective on early malformation development.

Purpose of the Study:

• Investigate fetal echocardiographic, morphological, and histological features of aorto-left ventricular tunnel.
• Compare fetal findings with those in older patients.

Main Methods:

• Retrospective analysis of four fetal cases diagnosed with aorto-left ventricular tunnel.
• Detailed echocardiographic and anatomical observations during fetal life.
• Comparison with existing literature on the malformation.

Main Results:

• Fetal aorto-left ventricular tunnel presents with left ventricular enlargement/hypertrophy, aortic root dilation, and aortic valve regurgitation.
• Anatomical abnormalities noted at aortic ventriculoarterial and sinotubular junctions.
• Findings are independent of necrosis, ischemia, or mucopolysaccharide presence.

Conclusions:

• Aorto-left ventricular tunnel is a developmental abnormality.
• Reliable mid-trimester diagnosis is possible with fetal echocardiography and color Doppler.
• Clarified anatomical relations are crucial for diagnosis and surgical correction.