Which defect corresponds with the gooseneck sign?

The gooseneck sign is characteristic of the endocardial cushion defect, also known as atrioventricular septal defect. This defect involves a failure of proper embryonic development of the heart, leading to a combination of atrial septal defect, ventricular septal defect, and abnormal development of the heart valves.

In the case of an endocardial cushion defect, the gooseneck sign specifically refers to the appearance of the left atrioventricular (AV) canal in imaging studies. It is characterized by a distinctive shape resembling a gooseneck, which results from the combination of the atrial and ventricular septal defects and the bridging of the mitral and tricuspid valves. This anatomical configuration is pivotal in identifying the defect during clinical assessments and imaging techniques, confirming its association with the endocardial cushion defect.

Understanding the unique features of various congenital heart defects can assist in their identification and management, making it crucial for healthcare professionals to be familiar with signs such as the gooseneck in these contexts.