Multiple Maxillar Exostosis

Teaching point: Multiple buccal exostosis are rare but asymptomatic, unequivocal, and always benign conditions of the jaw

Colonic Hemostatic Clip Causing Perforated Acute Appendicitis

Teaching Point: The advantages of CT over other imaging techniques for the diagnosis of acute appendicitis in adults include the ability to identify foreign bodies that may be involved

Short Occult Retractile Fibrous Scar Causing Exclusive Retrograde Stenosis of the Sigmoid Colon: An Incidental Diagnosis Nineteen Years After a Single Episode of Colonic Diverticulitis

We report a rare case of purely retrograde stenosing stricture of the sigmoid descending colonic junction fortuitously diagnosed during the waning of a failed virtual colonoscopy in a 69-year-old patient. The rather asymptomatic patient was addressed to investigate a positive fecal occult blood test. He had suffered a single acute colonic diverticulitis episode 19 years before. A contrast-enhanced abdominal CT and complementary focused abdominal ultrasound fully diagnosed a short curvilinear contrast-enhancing “scar-like” tissue infiltrating the posterior colonic wall and developing retractile adherences with the retroperitoneum of the left iliac fossa. The imaging features are presented with pathologic correlation

Extensive Cervico-Thoraco-Abdominal Attacks of Angioedema: CT Diagnosis in Two Unusual Cases

Angioedema (AE) classically manifests as an acute transient swelling of extra-visceral spaces, subcutaneous and submucosal tissues. Sometimes it may be a life-threatening condition. The causes are numerous, and the common denominator is an increased vascular permeability allowing diffusion or extravasation of fluid from the vascular bed to the interstitial space. The severity of AE is related to the cause, body location, and extension. We hereby report two very unusual cases characterized by a massive attack of AE from the left cervical area to the pelvis through the length of the mediastinum and axial posterior retroperitoneum. The diagnosis was established by CT. The first case was found related to drug intake, and the second appeared idiopathic