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).
The signs of papilledema that are seen using an ophthalmoscope include: 1  venous engorgement (usually the first signs) 2  loss of venous pulsation. 3  hemorrhages over and/or adjacent to the optic disc. 4  blurring of optic margins. 5  elevation of the optic disc. 6  Paton's lines (radial retinal lines cascading from the optic disc)