Image Based Question – 66334

The diagnostic feature of the condition marked by a red arrow in the picture below on prenatal ultrasonography is ?

A. A cyst behind the left atrium.

B. Mediastinal shift with normal heart axis.

C. Peristalsis in the thoracic cavity.

D. Absence of gas bubble under the diaphragm.

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Correct Answer » C Explanation

The diagnostic feature of congenital diaphragmatic hernia on prenatal ultrasonography is Peristalsis in the thoracic cavity.

• The sonographic diagnosis of fetal CDH relies on the visualisation of abdominal organs in the chest.

• Other pointers may be:

Absence of a normally positioned stomach,

Mediastinal displacement,

Small abdominal circumference

Polyhydramnois.