Acute Appendicitis Presenting As Acute Gastritis in an Adult Patient with Undiagnosed Congenital Gut Malrotation: A Case Report

Abstract Background We report a case of an atypical presentation of acute appendicitis in an adult due to an undiagnosed congenital gut malrotation. Objective The obvious benefit of observation with serial examinations followed by the use of computed tomography (CT) is discussed in aiding in the diagnosis for atypical presentations of appendicitis. Case Report A 45-year-old man who presented with epigastric pain and vomiting was diagnosed with acute left-sided appendicitis on CT scan. The patient’s appendix was located in the left lower quadrant of the abdomen due to undiagnosed congenital gut malrotation, thus resulting in an atypical presentation of a common illness. Conclusion Observation with serial examinations, followed by CT scanning if indicated, is an invaluable strategy to use in diagnosing atypical presentations of common pathology.