Newborn with hydrocephalus on prenatal US

Head US of agenesis of the corpus callosum with a small interhemispheric cyst
Coronal US of the brain shows a Viking horn deformity of the anterior horns of the lateral ventricles (above left) and parallel bodies of the lateral ventricles (above right). There is mild hydrocephalus present and the third ventricle is high riding. Sagittal US of the brain (below) shows absence of the corpus callosum.

The diagnosis was agenesis of the corpus callosum with a small interhemispheric cyst.

Toddler with cervical adenopathy with an incidental finding on a neck CT exam

MRI of Dandy Walker malformation
Sagittal T1 MRI without contrast of the brain (upper left) shows an enlarged posterior fossa containing a dilated fourth ventricle resulting in a large midline cyst that is causing elevation of the superior cerebellum and torcular inversion. Axial (upper right) and coronal (below) T1 MRI without contrast of the brain show agenesis of the cerebellar vermis. A mild-moderate amount of hydrocephalus is present.

The diagnosis was Dandy Walker Malformation.

Newborn with anterior abdominal wall defect and dilated small bowel

Surgical image of gastroschisis
Surgical image shows an anterior abdominal wall defect with the small bowel protruding out of the abdomen, with no surrounding membranous sac. The small bowel loops are dilated. There was an atresia just distal to the cecum and the distal colon was small in caliber. A silo for the abdominal contents was constructed. A gastrostomy and cecostomy were also placed.

The diagnosis was gastroschisis and colonic atresia.

Premature newborn with lethargy

Head US of neonatal intraventricular hemorrhage grade III and periventricular hemorrhage
Coronal US of the brain shows increased echogenicity within the anterior horn of the left lateral ventricle with ventricular dilation (upper) and increased echogenicity within the brain parenchyma in the left anterior periventricular region and right temporal region (lower left) and in the bilateral posterior periventricular regions (lower right).

The diagnosis was left grade III neonatal intraventricular hemorrhage and bilateral periventricular hemorrhage.