MediAI

  Keywords: Pneumatosis intestinalis, intramural bowel gas, bowel wall gas, CT diagnosis of pneumatosis intestinalis, submucosal polypoid lesions, abdominal CT, intestinal ischemia, portal venous gas, pneumoperitoneum, colonoscopy findings Introduction Pneumatosis intestinalis (PI) —also referred to as intramural bowel gas or gas within the bowel wall —is a radiologic and pathophysiologic entity characterized by the presence of gas dissecting into the submucosa or subserosa of the small or large intestine. Although pneumatosis intestinalis may be benign and incidental, it may also signify life-threatening pathology such as bowel ischemia. Therefore, accurate recognition of pneumatosis intestinalis on CT , abdominal radiography, and endoscopy is critical. This expert-level column presents a comprehensive review of pneumatosis intestinalis based on contemporary literature and integrates imaging findings from the attached case of a 65-year-old male presenting for screening colon...