Pneumoperitoneum: Explanation of X-ray Findings

A pneumoperitoneum refers to free gas in the peritoneal cavity and it appears on an erect chest radiograph as a subdiaphragmatic lucency. The double wall sign (a.k.a., Rigler Sign) occurs when extraluminal gas is present on either sides of the intestinal wall, thus resulting in a clear outline of the intestine. 0:00 Intro 0:12 Free Air Under Diaphragm 2:03 Double Wall Sign (a.k.a., Rigler Sign) 📺 Subscribe To My Channel and Get More Great Quizzes and Tutorials    / @med4vl   #FOAMrad #MedEd #radiology Disclaimer: All the information provided by Medical Education for Visual Learners and associated videos are strictly for informational purposes only. It is not intended as a substitute for medical advice from your health care provider or physician. It should not be used to overrule the advice of a qualified healthcare provider, nor to provide advice for emergency medical treatment. If you think that you or someone that you know may be suffering from a medical condition, then please consult your physician or seek immediate medical attention.