MDCT is highly accurate for predicting the site of gastrointestinal tract perforations. Three of eight CT findings significantly correlate with surgical diagnosis.

Diagnosis of intragastric band erosion after gastric banding is usually made with endoscopy. However, the radiologic appearance of band erosion when visualized on an upper gastrointestinal series is pathognomonic and allows initial imaging diagnosis. In patients with extraluminal air or prosthesis infection, CT findings also are suggestive of this postoperative complication.

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Infectious aneurysms are almost invariably of bacterial origin. It is a rare life-threatening disease, with a mortality reaching 67% in the absence of an early treatment (1), due to hemorrhage and uncontrolled sepsis.Clinical and biological findings are not specific and the diagnostic is often delayed. In the presence of fever and sepsis, CT is the imaging method of choice as several features may indicate the infectious origin and distinguish from atherosclerotic aneurysms. Case reportA 55-year-old woman was admitted in our institution because of fever and abdominal pain.Upon admission, she presented with tachycardia (110 bpm) and slightly decreased blood pressure (110/70 mmHg). Infection of the lower urinary tract was suspected at first. Blood tests showed an important inflammatory syndrome with increased C-reactive protein (CRP) levels (34 mg/dL, normal: < 1 mg/dL). However, urine analysis did not disclose any abnormal findings. A CT-scan of the whole abdomen was performed (Fig. 1).CT revealed an important infiltration of the retroperitoneal fat surrounding the distal part of the abdominal aorta as well as the proximal portion of the right iliac artery. The density of the infiltrated fat was evaluated at 20 HU, which was hardly compatible with blood. The infiltration also involved the pelvic retroperitoneal space. After contrast artery and measured 44 x 31 mm in axial view. Based on these clinical and radiological findings, the diagnosis of infected aneurysm of the right iliac artery was rendered. The patient was surgically treated 3 days after admission. She is alive and doing well 2 years after the operation. injection (Fig. 2), CT demonstrated a large aneurysm that was located in the proximal part of the right iliac JBR-BTR, 2012, 95: 350-354. MYCOTIC ANEURYSM OF THE RIGHT ILIAC ARTERY: IMAGING DIAGNOSIS AND CORRELATION WITH PATHOLOGICAL FINDINGSG

We report the case of an 80-year-old man who developed a colocutaneous fistula as a complication of anastomotic leakage following segmental colonic resection. The patient presented with an abscess of the abdominal wall, subcutaneous emphysema, pneumomediastinum, pneumothorax, pneumorrhachis, and pneumoscrotum. We discuss the possible mechanisms for these unusual clinical presentations of extraperitoneal air following anastomotic leak.

This case report suggests that every patient presenting with acute pancreatitis without obvious etiology should be evaluated for the intake of toxics other than alcohol, including L-arginine.

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