Preschooler with cystic fibrosis and abdominal pain

AXR of distal intestinal obstruction syndrome / DIOS
AXR supine (above left) shows multiple dilated loops of small bowel with a stool-like mass in the mid-abdomen. AXR upright (above right) shows multiple air-fluid levels. AP image from an enema with high osmolar water soluble contrast (below) shows complete opacification of a normal appearing colon. The terminal ileum could not be refluxed and specifically the stool-like mass in the mid-abdomen could not be reached with contrast.

The diagnosis was small bowel obstruction due to distal intestinal obstruction syndrome in a patient with cystic fibrosis.

Newborn with choking while feeding

UGI of esophageal atresia with H-type tracheo-esophageal fistula
CXR (left) shows dextrocardia and diffuse lung infiltrates bilaterally. Oblique image from a pull-back esophagram performed with a nasogastric tube while injecting low-osmolar water soluble contrast in the distal esophagus (right) shows opacification of the trachea and bronchial tree via a fistula.

The diagnosis was aspiration pneumonia due to esophageal atresia with H-type tracheo-esophageal fistula.

Unjaundiced preschooler with vomiting and abdominal pain

CT and cholangiogram of choledochal cyst Type I
Axial (above left) and coronal (above right) CT without contrast of the abdomen show a large cystic lesion between the right kidney and pancreas with extensive surrounding inflammation. The gall bladder was normal. AP image from intraoperative cholangiogram (below) shows the lesion represents diffuse dilation of the common bile duct with free passage of contrast into the small bowel.

The diagnosis was choledochal cyst Type I.

Teenager with right lower quadrant pain and WBC=30,000

US of acute appendicitis with appendicolith
Sagittal US of the right lower quadrant (above) shows a dilated, non-compressible, blind ending tubular structure measuring 10 mm in diameter with an echogenic focus at its tip causing posterior shadowing. Transverse US of the cecum (below) shows it to be thickened in appearance.

The diagnosis was acute appendicitis with an appendicolith at the tip of the appendix. In the operating room, the inflammed appendix was adherent to an inflamed cecum.

Newborn with direct hyperbilirubinemia

Hepatobiliary scan of biliary atresia
Transverse US of the liver (above) at the level of the main portal vein shows the liver and intrahepatic and extrahepatic biliary tree to be unremarkable. The gall bladder (not shown) was small and collapsed, although the patient had been fasting for 12 hours before the exam. Serial images from a hepatobiliary scan performed after pretreatment with phenobarbital obtained up to 5 minutes after the injection of radiotracer (below left) show prompt uptake of radiotracer by the liver but no excretion of radiotracer into the biliary tree, gall bladder, or bowel. Delayed image obtained at 24 hours after injection of radiotracer (below right) again fails to show excretion of radiotracer into the biliary tree, gall bladder, or bowel.

The diagnosis was biliary atresia.

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.