An Unusual Case of Right Lower Quadrant Pain: A Case Report.

Introduction: The perforation of a cecal diverticulum is a rare and challenging condition for the emergency physician.
Case Report: A 47-year-old man with a past surgical history of bilateral inguinal hernia repair presented to the emergency department (ED) with acute abdominal pain of three days' duration. Pain was localized to the right lower quadrant (RLQ), with anorexia as the only associated symptom. Upon arrival to the ED, his exam demonstrated focal RLQ tenderness to palpation, rebound tenderness, and guarding. Labs did not show any elevation in inflammatory markers, liver enzymes, or lipase. Computed tomography showed no evidence of acute appendicitis, colitis, or hernia recurrence. After morphine and reassessment, the patient still had a focal peritoneal exam in the RLQ. Surgical consultation was obtained and recommended additional non-opioid analgesia as well as serial abdominal exams. After several repeat abdominal exams, there was no change in the focality of the patient's pain. Surgery was reconsulted and opted to take the patient to the operating room for exploratory laparoscopy with "appendicitis" as the presumptive diagnosis. Pathology report revealed a perforated cecal diverticulum that was adherent to the abdominal wall. The patient did well and was discharged on his third postoperative day.
Conclusion: This case further underlines that even in the era of sensitive imaging tools, the diagnostic value of a targeted physical exam with clinical re-evaluation can never be overestimated.