Files stored in the UPD format are more commonly known as program update information files. These .upd files are text documents, and its content can be viewed by any text editing or word processing application. Users of Microsoft Windows-based systems can use the Microsoft Notepad application to open and edit these .upd text documents.
Croup (acute laryngotracheobronchitis) on X-ray with steeple sign. Croup, also called acute laryngotracheobronchitis is caused by viral infection of the upper airway usually parainfluenza virus or respiratory syncytial virus (RSV).
Tumor encasement is a rare cause of mesenteric ischemia. With proper timing of the contrast-agent bolus, a thrombus in a large vessel is seen as a soft-tissue filling defect in rare cases. Small-bowel obstruction can cause vessel obstruction and lead to ischemia, which often is apparent as dilated loops on CT scans.