Master Specialist Pediatric Surgery (PED5492)
for DHA Speciality

Core Concepts

Pediatric surgery addresses surgical conditions in infants, children, and adolescents, from pre-natal to young adulthood. It encompasses a vast range of conditions including congenital anomalies, oncological pathologies, trauma, and acquired diseases. Key distinctions from adult surgery include unique physiological responses (fluid & electrolyte balance, thermoregulation, drug metabolism), smaller anatomical structures, rapid growth & development, and the long-term impact of interventions on a developing individual. A multidisciplinary approach (neonatology, anesthesia, genetics, oncology, GI, urology) is paramount for optimal outcomes.

Clinical Presentation

• Neonates/Infants:
  • Vomiting (bilious: urgent surgical consultation for obstruction; non-bilious: pyloric stenosis, GERD).
  • Abdominal distension +/- failure to pass meconium/stools (intestinal atresia, Hirschsprung's, meconium ileus, malrotation).
  • Respiratory distress +/- scaphoid abdomen (Congenital Diaphragmatic Hernia - CDH).
  • Jaundice (biliary atresia).
  • Palpable mass (renal, adrenal, GI).
  • Inguinal/scrotal swelling (hernia, hydrocele, testicular torsion).
• Toddlers/Children:
  • Acute abdominal pain (appendicitis, intussusception, cholecystitis, mesenteric adenitis).
  • Recurrent abdominal pain, constipation, or vomiting (malrotation, chronic appendicitis, functional GI disorders).
  • Palpable lumps/masses (neck: branchial/thyroglossal cysts; abdominal: Wilms', neuroblastoma; limb: soft tissue tumors).
  • Scrotal pain/swelling (testicular torsion, epididymitis, incarcerated hernia).
  • Inguinal swelling (hernia).
  • Trauma-related injuries (blunt abdominal, burns, fractures).
  • Failure to thrive (chronic disease, malabsorption, structural anomalies).

Diagnosis (Gold Standard)

Diagnosis often relies on a combination of clinical assessment, targeted imaging, and sometimes invasive procedures. For intestinal obstruction, plain abdominal X-rays (supine and erect) are first-line, followed by contrast studies (upper GI series for malrotation, contrast enema for Hirschsprung's/meconium ileus). Ultrasound is gold standard for pyloric stenosis, intussusception, appendicitis, and renal anomalies. CT scans are reserved for complex trauma, oncological staging, or detailed anatomical assessment. Rectal suction biopsy is diagnostic for Hirschsprung's disease. Scrotal ultrasound with Doppler is crucial for testicular torsion. Endoscopy/bronchoscopy are used for direct visualization and biopsy in respective systems.

Management (First Line)

Initial management focuses on stabilization: securing airway/breathing/circulation (ABCs), fluid & electrolyte resuscitation, thermoregulation, and pain control. Pre-operative antibiotics are often indicated for suspected infection or bowel involvement. Surgical intervention varies by condition:

• Neonatal emergencies:
  • **Malrotation with volvulus:** Ladd's procedure.
  • **Intestinal atresia:** Resection of atretic segment with primary anastomosis.
  • **Hirschsprung's disease:** Leveling colostomy/ileostomy then definitive pull-through procedure (e.g., Soave, Swenson, Duhamel).
  • **Pyloric stenosis:** Ramstedt pyloromyotomy.
  • **CDH:** Stabilization then delayed surgical repair.
  • **Biliary atresia:** Kasai portoenterostomy (ideally <60 days).
• Common pediatric conditions:
  • **Appendicitis:** Laparoscopic appendectomy.
  • **Intussusception:** Air/saline enema reduction (first-line); if unsuccessful/perforation, surgical reduction/resection.
  • **Inguinal hernia:** High ligation of the hernial sac.
  • **Undescended testis:** Orchidopexy (usually 6-18 months).
  • **Testicular torsion:** Urgent surgical exploration and detorsion with orchidopexy of affected and contralateral testis.
  • **Oncological:** Surgical excision, often combined with chemotherapy/radiotherapy.
  • **Trauma:** Damage control surgery, specific organ repair, or observation.

Exam Red Flags