Snapshot A 63-year-old female is brought to the emergency room for severe abdominal pain for the past 1 day. She reports that the pain is 9/10, dull, with intermittent exacerbations concentrated at the left lower quadrant (LLQ). She endorses low-grade fever, nausea, and vomiting for the past couple of hours. Her past medical history includes hypertension, constipation, and diverticulosis. A physical examination demonstrates abdominal tenderness and some diffuse voluntary guarding. Introduction Clinical definition login to view 8 more bullets Epidemiology Demographics login to view 3 more bullets Risk factors login to view 5 more bullets ETIOLOGY Pathogenesis login to view 5 more bullets Presentation Symptoms login to view 6 more bullets Physical exam login to view 4 more bullets imaging Computed tomography (CT) with oral and IV contrast login to view 3 more bullets Abdominal ultrasound login to view 2 more bullets Abdominal and chest radiographs login to view 2 more bullets Colonoscopy login to view 2 more bullets Studies Diagnostic testing login to view 8 more bullets Differential Inflammatory bowel syndrome (IBD) login to view 2 more bullets Colorectal cancer login to view 2 more bullets Acute appendicitis login to view 2 more bullets Treatment Management depends on disease severity, certain characteristics, and the presence of complications login to view 1 more bullet Outpatient treatment login to view 2 more bullets Inpatient medical management login to view 5 more bullets Surgery login to view 2 more bullets Complications Abscess login to view 3 more bullets Bowel obstruction Diverticular fistula Perforation Peritonitis Shock