A 22-year-old male presents to the emergency department with a 24-hour history of periumbilical pain that migrated to the right lower quadrant. He reports anorexia, nausea, and one episode of vomiting. On examination, he is febrile (38.2°C), and there is tenderness at McBurney's point with guarding. Rebound tenderness is present. His WBC is 12,500/µL with a left shift. Abdominal ultrasound shows a non-compressible, dilated appendix measuring 8 mm with surrounding free fluid. What is the most appropriate next step in management?

Explanation

## Diagnosis and Clinical Presentation **Key Point:** This patient has acute appendicitis with classic clinical features: migratory pain (periumbilical → RLQ), McBurney's point tenderness, rebound tenderness, fever, and leukocytosis with left shift. **High-Yield:** The ultrasound findings (non-compressible, dilated appendix >6 mm with surrounding free fluid) confirm acute appendicitis. In this uncomplicated, hemodynamically stable case, imaging diagnosis is sufficient — no further delay is needed. ## Management Algorithm ```mermaid flowchart TD A[Acute appendicitis confirmed]:::outcome --> B{Hemodynamically stable?}:::decision B -->|Yes| C{Uncomplicated?}:::decision B -->|No| D[Resuscitate, then urgent surgery]:::urgent C -->|Yes| E[Laparoscopic appendicectomy]:::action C -->|No| F[Open appendicectomy]:::action E --> G[Lower morbidity, faster recovery]:::outcome F --> H[Indicated if perforation/peritonitis]:::outcome ``` ## Why Laparoscopic Appendicectomy? | Feature | Laparoscopic | Open | |---------|--------------|------| | **Indications** | Uncomplicated, stable appendicitis | Perforation, peritonitis, hemodynamic instability | | **Advantages** | Reduced wound infection, faster recovery, shorter hospital stay | Better for complex cases, single incision | | **Conversion rate** | 5–15% (acceptable) | N/A | | **Current standard** | Preferred first-line approach | Reserved for specific scenarios | **Clinical Pearl:** Laparoscopy allows inspection of the entire abdomen, ruling out other pathology (ovarian pathology, mesenteric adenitis, Crohn's disease) — a significant advantage in this age group. **High-Yield:** In uncomplicated acute appendicitis with confirmed imaging, proceed directly to surgery without further delay. Additional CT imaging adds cost and delays definitive treatment. ## Why NOT the Other Options - **Open appendicectomy:** Reserved for complicated cases (perforation, peritonitis, sepsis). This patient is uncomplicated and hemodynamically stable. - **Conservative management:** Antibiotics alone have a recurrence rate of 20–40% and are reserved for selected cases with imaging-confirmed uncomplicated appendicitis in resource-limited settings or patient refusal. Standard care is operative. - **CT before surgery:** Imaging is already diagnostic (ultrasound). Further imaging delays definitive treatment and increases radiation exposure without changing management in this clear-cut case.