RESUMEN
INTRODUCTION: Stump appendicitis is a rare complication of appendectomy due to recurrent inflammation of the residual appendix. The diagnosis is often delayed due to low index of suspicious, which may result in serious complications. CASE PRESENTATION: We describe a case of stump appendicitis occurred 12 months after appendectomy in 25 years old man. Despite past medical history of appendectomy the diagnosis was made by means of ultrasound scan and an high degree of clinical suspicion. CONCLUSIONS: Stump appendicitis is a rare but important complication of appendectomy, often misdiagnosed. Prompt recognition is important to avoid serious complications. This pathologic entity should always be kept in mind on case of right lower quadrant pain.