The symptom of nephrography is a sign of occlusive urological pathology, which appears on excretory urograms. It is characterized by the presence of a clear x-ray shadow on the side of the kidney, which usually does not contain a contrast agent. This may be due to various reasons, such as ureteral occlusion (eg, kidney stones) or other kidney diseases.
When performing excretory urography using X-rays, contrast is injected into the bladder and then removed from the body through the urinary tract. In the image you can see the shadow of the kidneys, which are usually filled with a contrast agent. However, if the ureter is occluded (blocked), contrast cannot penetrate the renal pelvis and calyces. Thus, on the excretory urogram, a clear shadow will be visible on the side of the affected kidney, which will differ from the shadow of the healthy kidney.
The nephrography symptom is an important diagnostic sign of occlusive diseases of the urinary tract, such as kidney stones, urinary tract tumors and other conditions. It allows doctors to gain insight into the condition of the patient's urinary tract and determine the need for further examination and treatment.
The nephrography symptom is one of the diagnostic signs that is used in medicine to determine the condition of the kidneys and urinary tract. This symptom appears on excretory urography - an x-ray examination in which the patient is injected with a contrast agent intravenously, and then pictures of the kidneys and urinary system are taken.
If there is a symptom of nephrography on excretory urography, the X-ray shadow of the kidney is clearly visible on the images, while there is no contrast agent in the renal pelvis and calyces. This may indicate the presence of occlusion - blockage of the ureters, which can be caused by various reasons, such as urolithiasis, tumors or other diseases.
To determine the symptom of nephrography, a urologist can perform excretory urography, which allows you to identify the presence of this symptom and determine the cause of its occurrence. If a symptom of nephrography is detected, the doctor may prescribe additional studies to clarify the diagnosis and prescribe appropriate treatment.
Thus, the symptom of nephrography is an important diagnostic sign that helps the doctor determine the condition of the patient’s kidneys and urinary tract. It can be used in combination with other diagnostic methods for a more accurate diagnosis and treatment.