Related Experiment Video
Updated: Aug 5, 2026

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
[Radiographic evaluation of upper calyx syndrome]
Abstract:
Upper calyx syndrome in children was first described in 1968. It may be caused by dysmorphy, organic narrowing and vascular compression. The purpose of this report is estimation the frequency of this syndrome in children with chronic pyelonephritis, its clinical significance and determination the test of roentgenological diagnosis. In 21 cases (5% children with chronic pyelonephritis) there were changes in upper calyx. The main cause of this changes was vascular compression (4,3%). Clinical significance of upper calyx syndrome is big, because in all the cases there was chronic infection of genitourinary tract. The roentgenological signs of upper calyx syndrome are; obstruction at the infundibulum, significant distending of calyx and delayed emptying at intravenous pyelography.
Related Concept Videos
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Imaging Studies I: Kidney, Ureter, and Bladder Studies
Imaging Studies II: Ultrasonography
Imaging Studies III: Computed Tomography
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies VI: Voiding Cystourethrography and Cystography

