Abstract
Valentino's syndrome is a rare but potentially lethal differential diagnosis for acute appendicitis. We herein present the case of a 22-year-old male patient who presented to the emergency department with acute abdominal pain. Clinical suspicion of acute appendicitis was corroborated by analytical and imaging findings. However, surgical exploration revealed a perforated peptic ulcer. A high degree of suspicion during preoperative and intraoperative management is important in recognizing and treating this condition, which carries significant morbidity and mortality risks.