KEY FACTS Terminology Most common omphalomesenteric duct remnant Imaging Classic imaging appearance (in patient with GI bleeding): Focal persistent accumulation of radiotracer in right lower quadrant on nuclear pertechnetate scan (Meckel scan) Coincident with & isointense to gastric uptake as…
KEY FACTS Terminology Invagination of distal small bowel (intussusceptum) into colon (intussuscipiens) in telescope-like manner Imaging US: Best diagnostic modality if clinically suspected Round mass with target sign in right abdomen Mean diameter of 2.6 cm (vs. 1.5 cm for…
KEY FACTS Terminology Acute obstruction of appendiceal lumen → distention → ↑ intraluminal pressure → venous obstruction → ischemia → superimposed infection of appendiceal wall → eventual perforation Imaging US 1st-line modality in child with RLQ pain Noncompressible, dilated, tubular…
KEY FACTS Terminology Hernia: Protrusion of contents from normally encasing body cavity through normal or abnormal opening Inguinal hernia: Protrusion of abdominal contents through defect in inguinal region Indirect inguinal hernia: Contents protrude into open deep inguinal ring, extend through…
KEY FACTS Terminology Ingestion of multiple magnets or single magnet + additional metallic foreign bodies Potential for significant bowel complications Rare-earth magnets 5-10x stronger than traditional magnets Imaging Metallic density foreign bodies; shapes variable Magnets attract through bowel walls Multiple…
KEY FACTS Terminology Ingestion of disc-shaped battery, typically by young child Increasingly of more injurious lithium cell type Esophagus particularly susceptible to injury by lodged battery with potentially catastrophic consequences Imaging Frontal radiograph: Margin shows double halo/ring en face Lateral…
KEY FACTS Imaging Disc-shaped metallic density without circumferential beveled edge/step-off Most common sites of impaction Upper esophagus at thoracic inlet Midesophagus at aortic arch impression Lower esophageal sphincter at gastroesophageal junction Other sites of impaction include pylorus, duodenum, ileocecal valve…
KEY FACTS You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Hypertrophic pyloric stenosis (HPS): Idiopathic pyloric muscle thickening in young infants → progressive gastric outlet obstruction Imaging Near complete gastric outlet obstruction due to abnormally elongated & thickened pyloric muscle Pylorus fails to relax/open → minimal gastric…