• Caterpillar sign in Pyloric Stenosis
  • Oval lucency which is divided by falcfirom ligament → Falciform ligament sign and Football sign. Suggestive of pneumoperitoneum
  • Large pneumoperitoneum which outlines the falciform ligament: Football sign and Falciform ligament sign
  • Massive pneumoperitoneum (Football sign)
  • Dilated bowel loops → Bowel obstruction. Rigler sign and Football sign suggest associated pneumoperitoneum
  • Centralised bowel loops with large football shaped gas shadow beneath the anterior abdominal wall (Football sign)
  • Distended, gas-filled loops of small bowel. Extensive intramural gas and free gas (Rigler sign)
  • Pneumoperitoneum as suggested by Rigler sign. Caecal perforation was confirmed intraoperatively
  • Central crowding of bowel loops: consistent with Ascites. No evidence of obstruction. No evidence of pneumoperitoneum
  • Supine abdominal radiographs demonstrates thickening of the descending colon wall (Thumbprinting). Case is Pseudomembranous Colitis
  • Impression of a featureless gas pattern within the transverse colon extending distally, as well as Thumbprinting pattern, indicating mucosal edema. Chronic Inflammatory bowel disease (IBD)
  • RLQ artifact = mesh hernia repair. Multiple dilated gas filled loops of small bowel throughout the abdomen. Valvulae conniventes illustrated. Small Bowel obstruction
  • Large bowel is gas filled and distended down to the level of the descending colon-sgmoidal. Small bowel collpased. Large Bowel obstruction
  • Extensive arterial calcification including of an abdominal Aortic aneurysm
  • Multiple laminated gallstones in RUQ. Only a small percentage of gallstones are visible on plain film.
  • Right psoas shadow is indistinct. Psoas sign. Cannot tell from abdominal imaging but this is post Abdominal Aortic aneurysm repair
  • Positive left Psoas sign. Confirmed to be ruptured abdominal Aortic aneurysm on CT imaging
  • Barium Swallow
    • Midgut Volvulus: corkscrew appearance of the fourth portion of the duodenum and the proximal jejunum and an abnormal position of the duodenojejunal junction
    • Diffuse oesophageal spasm as suggested by the uncoordinated peristalsis in the oesophagus resulting in corkscrew oesophagus