Preschooler with colicky abdominal pain

US of pancreatitis caused by pancreatic duct stone
Transverse US of the pancreatic head (above) shows just to the right of midline a round echogenic lesion with posterior shadowing in the center of the pancreatic head while transverse US of the pancreatic body (below) shows a dilated pancreatic duct throughout the body of the pancreas.

The diagnosis was a large stone in the pancreatic head portion of the pancreatic duct causing pancreatic duct obstruction and pancreatitis.

School ager with right lower quadrant pain and elevated white blood cell count

CT of omental infarction
Axial CT with contrast of the abdomen shows diffuse mesenteric fat stranding which is most prominent along the right side of the abdomen. The appendix (not pictured) measured 7-8 mm in diameter and was considered via measurement to be indeterminate for acute appendicitis.

The diagnosis was omental infarction which was seen along with a normal appendix in the operating room.

Teenager with an incidentally noted paraspinal mass on a CXR

Upper GI of organoaxial gastric volvulus and hiatal hernia
Early AP (above left) and later AP (above right) and lateral (below) images from an upper GI shows rotation of the stomach along its long axis with reversal of the greater and lesser curvatures of the stomach. The stomach is also noted to have slid through the esophageal hiatus into the chest.

The diagnosis was organoaxial gastric volvulus in a patient with a hiatal hernia.

Toddler with drainage of stool from the umbilicus

Meckel’s scan of Meckel's diverticulum
AP delayed image (left) from a Tc-99m pertechnetate scan (Meckel’s scan) shows a focal round concentration of radiotracer in the right lower quadrant superior and lateral to the midline bladder which is seen in the middle of the lower abdomen superior to the bladder on the lateral (right) delayed image.

The diagnosis was Meckel diverticulum with a patent omphalomesenteric duct.

Ultrapremature newborn with massive abdominal distension who has passed only a little meconium after 4 days

Enema of meconium obstruction of prematurity
AXR AP (above) shows massively dilated loops of bowel throughout the entire abdomen. AXR AP taken at the beginning of an enema performed with water-soluble contrast (lower left) shows meconium filling almost the entire colon. AXR AP taken later in the exam (lower right) shows reflux of contrast into massively dilated loops of small bowel. Several hours after the enema, the patient passed a large amount of meconium and the abdomen became completely decompressed.

Teenager with a liver lesion

Axial and coronal CT with contrast of the abdomen arterial phase imaging (left) shows an enhancing round lesion in the dome of the liver that has a central scar which fills in on the portal venous phase imaging and becomes isodense with the surrounding liver parenchyma (center). Axial T1 MRI with Eovist (hepatocyte specific) contrast of the abdomen in the arterial phase (right upper) again shows the enhancing round lesion with a central scar that fills in the portal venous phase imaging (right center) and then retains its contrast on the delayed phase imaging (right lower).

The diagnosis was focal nodular hyperplasia.