Management of Right Lower Quadrant Pain with Negative CT Findings

Clinical Context and Interpretation

The American College of Radiology suggests that a negative CT scan with only stool present can be managed conservatively, as the finding represents a common scenario where imaging has effectively excluded surgical emergencies, with CT having 95% sensitivity and 94% specificity for appendicitis 1, 4
Among patients with right lower quadrant pain where CT shows no acute diagnosis, only 14% require hospitalization and 4% need surgical or image-guided intervention, compared to 41% hospitalization and 22% intervention rates when CT identifies pathology, with the most common CT diagnoses including constipation, gastroenteritis, colitis, benign adnexal masses, and inflammatory bowel disease 1, 2, 3

The American College of Radiology recommends initiating a bowel regimen with stool softeners and/or osmotic laxatives to address constipation, providing symptomatic pain relief with appropriate analgesics, and reassessing clinical status within 24-48 hours to ensure symptom improvement and exclude evolving pathology 1, 2

It is advised to watch for red flag symptoms, including fever, persistent vomiting, worsening pain, peritoneal signs, or inability to tolerate oral intake, and to reimage only if clinical deterioration occurs or new concerning features develop, considering alternative diagnoses if pain persists despite bowel management 1, 2, 4, 5

The American College of Radiology suggests avoiding unnecessary repeat imaging in patients whose symptoms are improving or stable, as this increases radiation exposure without changing management, and not dismissing persistent pain that fails to improve with conservative management, considering patient-specific factors such as age and gender when persistent symptoms occur 1, 2, 5, 6