Appendicitis and surgical abdomen — structured clinical encounter

Station 1 — assessment and recognition

Asked for my first impression, I explain that a previously well nine-year-old with peri-umbilical pain that has migrated to the right iliac fossa over eighteen hours, with anorexia, nausea and localised tenderness at McBurney point with a wince on hopping, has the classic sequence of acute appendicitis. I would ask him to point with one finger to where it hurts most, watch him hop or cough to elicit the peritoneal wince, and grade him as mildly dehydrated from the reduced intake and vomiting. [1]

Station 2 — excluding the mimics

Asked what else I would consider, I state that I would examine the groin hernial orifices for an incarcerated hernia, examine the testes because testicular torsion presents with lower abdominal pain and must not be missed, and listen to the lungs for a lower-lobe pneumonia. I would consider mesenteric adenitis, urinary infection, constipation and, in an adolescent girl, ovarian torsion or a pregnancy-related cause. The migratory pattern with anorexia and the peritoneal wince point more strongly to appendicitis, but I would confirm with ultrasound and score him rather than settle on a comfortable alternative. [3] [1]

Station 3 — scoring, confirmation and resuscitation

To stratify risk I would apply the ten-point Pediatric Appendicitis Score, which awards one point each for nausea, migration, anorexia, fever, the white cell count and a left shift, and two points each for right iliac fossa tenderness and for cough, percussion or hopping tenderness, placing him in the high-probability band. To confirm I would arrange an ultrasound, and if it were equivocal I would proceed to magnetic resonance imaging as the radiation-sparing second line. While that is organised I would make him safe with nil by mouth, intravenous access, opioid analgesia that does not delay the diagnosis, and a 10 to 20 mL per kilogram isotonic crystalloid bolus reassessed for dehydration. [2] [6]

Station 4 — the definitive treatment and the shared decision

For definitive treatment I would offer laparoscopic appendicectomy as the standard, with a short stay and a low wound infection rate. I would also lay out the non-operative antibiotic option, explaining that the landmark trial showed antibiotics resolve about three-quarters of uncomplicated cases at one year, but that long-term follow-up shows recurrence accumulates so a substantial minority come to appendectomy within a few years. I would discuss that a fecalith makes non-operative failure more likely, and I would use a shared-decision conversation so an informed family chooses between surgery and antibiotics in line with their values. [5] [9]

Station 5 — escalation, observation and the family conversation

Finally I describe how I would observe and counsel the family. If he proceeds to surgery and the appendix is simple, he recovers quickly with perioperative prophylaxis only and clear safety-netting for fever, increasing pain or wound discharge. If the family chooses non-operative management, I would admit him for intravenous antibiotics, observe for response, and give a clear safety-net that worsening pain, fever or peritoneal signs mean the plan converts to surgery. I would reassure them that most children with uncomplicated appendicitis do well either way, while being honest that non-operative care carries a real long-term recurrence that must be weighed against the recovery advantage of avoiding an operation. [3] [5]