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Difficulty: HardPediatric Gastrointestinal Disorders

Match each classic pediatric gastrointestinal clinical presentation with its most appropriate definitive procedural or surgical management.

  • A 4-week-old boy presents with progressive, projectile, non-bilious emesis and hypochloremic metabolic alkalosis; ultrasound confirms a thickened, elongated structure in the epigastrium.Extramucosal longitudinal splitting of the circular muscle layer
  • A 7-month-old infant exhibits episodic inconsolable crying, drawing of the legs to the chest, and currant jelly stools; abdominal ultrasound reveals a "target sign" in the right quadrant.Fluoroscopic or ultrasound-guided pneumatic enema reduction
  • A 3-day-old neonate suddenly develops acute bilious emesis; an upper gastrointestinal contrast series demonstrates a "corkscrew" appearance of the distal duodenum.Counterclockwise surgical detorsion, division of peritoneal bands, and appendectomy
  • A 2-year-old child presents with severe but painless lower gastrointestinal bleeding; a nuclear medicine scan indicates a distinct focus of radiotracer uptake in the right lower quadrant.Surgical excision of the symptomatic omphalomesenteric duct remnant
  • A full-term neonate fails to pass meconium by 48 hours of life; rectal suction biopsy confirms an absence of parasympathetic ganglion cells in the submucosal plexus.Resection of the aganglionic bowel segment followed by a pull-through anastomosis

Answer

The correct matches align Infantile Hypertrophic Pyloric Stenosis with pyloromyotomy, Intussusception with pneumatic enema, Midgut Volvulus with the Ladd procedure, Meckel Diverticulum with omphalomesenteric duct excision, and Hirschsprung Disease with resection and pull-through.
Each pediatric GI pathology has a highly specific definitive intervention. Pyloric stenosis requires splitting the hypertrophied muscle (pyloromyotomy). Intussusception is typically reduced non-operatively using a pneumatic enema. Midgut volvulus mandates the emergent Ladd procedure (detorsion, division of bands, appendectomy). Meckel diverticulum bleeding is stopped by excising the duct remnant. Hirschsprung disease requires removal of the non-functioning aganglionic segment and a pull-through anastomosis.

Step-by-Step Solution

1
Analyze the first clinical vignette and identify the diagnosis.
Projectile vomiting and metabolic alkalosis in a 4-week-old indicates pyloric stenosis.
This allows identification of the definitive surgical procedure, which is a pyloromyotomy (longitudinal splitting of the circular muscle).
2
Analyze the second clinical vignette and identify the diagnosis.
Episodic crying with a 'target sign' indicates intussusception.
This condition is uniquely managed first by procedural intervention (pneumatic enema reduction) rather than immediate surgery, provided there is no perforation.
3
Analyze the third clinical vignette and identify the diagnosis.
Acute bilious emesis with a 'corkscrew' duodenum in a neonate indicates midgut volvulus.
This is a surgical emergency requiring the Ladd procedure (detorsion, band division, appendectomy) to prevent bowel ischemia.
4
Analyze the fourth clinical vignette and identify the diagnosis.
Painless lower GI bleeding with positive nuclear scan indicates a Meckel diverticulum.
The bleeding is caused by ectopic gastric mucosa within the omphalomesenteric duct remnant, requiring surgical excision.
5
Analyze the fifth clinical vignette and identify the diagnosis.
Failure to pass meconium with absent ganglion cells indicates Hirschsprung disease.
The definitive treatment involves resecting the aganglionic segment that fails to relax, followed by a pull-through procedure.

Key Concept

Definitive procedural and surgical management of pediatric gastrointestinal emergencies
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Topics

Pediatric Gastrointestinal Disorders

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