Previous Foreign Body Ingestion in the Appendix Causing Acute Appendicitis: A Case Report.

Acute appendicitis due to a foreign body is a very rare condition with an incidence of 0.0005% of all appendicitis cases and among all age groups. It is one of the atypical cases of appendicitis, and it is a rare condition commonly asymptomatic; there is a period of time between ingestion of the body and appendicitis. A 14-year-old female patient presented to the emergency room with right lower quadrant colicky pain. Moreover, it was progressive with six hours duration, preceded by loss of appetite. It was associated with nausea, non-projectile vomiting, and diarrhea. By taking the past medical history, the patient had a history of multiple times of foreign ingestions when she was younger. On examination, the patient appeared ill, and was vitally stable. On palpation, the patient had a right lower quadrant tenderness. The patient had positive pointing, rebound, Rovsing, and psoas signs. Full labs were done. Abdominal x-ray revealed a radiopaque metallic body in the right lower quadrant. By ultrasound, there was a minimal free fluid collection in the pelvis. Intraoperatively, the appendix looked hyperemic. Appendectomy was performed, and a needle was extracted from the appendix. Furthermore, the histopathology revealed an early inflamed appendix. Foreign body-causing appendicitis is a rare condition. We need to investigate suspected cases carefully because the presentation is atypical, and sometimes the patients are asymptomatic.