TY - JOUR T1 - Crescent sign in abdominal aortic aneurysm JF - BMJ Case Reports DO - 10.1136/bcr-2018-225435 VL - 2018 SP - bcr-2018-225435 AU - Pooya Iranpour AU - Sara Haseli Y1 - 2018/05/31 UR - http://casereports.bmj.com/content/2018/bcr-2018-225435.abstract N2 - A 70-year-old man referred to emergency department with acute onset of severe flank pain. In initial examinations, the patient was pale, with pulse rate of 120/min and blood pressure of 95/65. In abdominal palpation a pulsatile mass was detectable. Urgent resuscitation was done.The patient had been known to have hypertension and abdominal aortic aneurysm (AAA) since 7 years ago. Abdominal CT scan without and with contrast injection (figures 1 and 2) showed a large fusiform abdominal aorta with crescentic focus of hyperdensity (black arrow) … ER -