Bowel atresia presents as obstruction usually in the distal small bowel with which ultrasound finding?

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Multiple Choice

Bowel atresia presents as obstruction usually in the distal small bowel with which ultrasound finding?

Explanation:
In fetal bowels, distal small-bowel atresia causes obstruction that makes the stomach and proximal bowel distend with fluid while the distal segments collapse. The ultrasound hallmark is multiple dilated, fluid-filled bowel loops seen within the fetal abdomen, appearing as several anechoic structures. This reflects proximal bowel distension from the obstruction. The double bubble sign is specific to proximal (duodenal) atresia, not distal bowel atresia. Absent stomach isn’t typical for this scenario, and polyhydramnios can occur with obstruction but doesn’t show the bowel’s ultrasound appearance itself.

In fetal bowels, distal small-bowel atresia causes obstruction that makes the stomach and proximal bowel distend with fluid while the distal segments collapse. The ultrasound hallmark is multiple dilated, fluid-filled bowel loops seen within the fetal abdomen, appearing as several anechoic structures. This reflects proximal bowel distension from the obstruction. The double bubble sign is specific to proximal (duodenal) atresia, not distal bowel atresia. Absent stomach isn’t typical for this scenario, and polyhydramnios can occur with obstruction but doesn’t show the bowel’s ultrasound appearance itself.

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