Search results
Results from the WOW.Com Content Network
In pregnancy, dextrorotation (rotation to the right) of the uterus can cause compression on the right ureter, thus making hydronephrosis more common in the right kidney than in the left kidney. Besides, hormones such as estrogen, progesterone, and prostaglandin can cause ureter dilatation, thus causing hydronephrosis despite the absence of ...
A number of factors can influence its efficacy, including chemical composition of the stone, presence of anomalous renal anatomy and the specific location of the stone within the kidney, presence of hydronephrosis, body mass index, and distance of the stone from the surface of the skin.
It is the most common cause of hydronephrosis detected in utero and is the most common anomaly detected on prenatal ultrasounds. [1] [2] It occurs in approximately 1 in every 1500 live births, is most commonly seen in males, involves the left ureter twice as often as the right ureter. [1] [2] UPJ obstruction is transient in most cases. [2]
The size of the renal pelvis plays a major role in the grading of hydronephrosis. Normally, the anteroposterior diameter of the renal pelvis is less than 4 mm in fetuses up to 32 weeks of gestational age and 7 mm afterwards. [2] In adults, 13% of the normal population have a transverse pelvic diameter of over 10 mm. [3]
Hydronephrosis is seen as an anechoic fluid-filled interconnected space with enhancement within the renal sinus, and normally, the dilated pelvis can be differentiated from the dilated calyces. [1] Figure 13. Hydronephrosis due to ureteropelvic junction obstruction in a pediatric patient. [1] Several conditions can result in urinary obstruction.
Nephrosis is any of various forms of kidney disease (nephropathy). In an old and broad sense of the term, it is any nephropathy, [1] but in current usage the term is usually restricted to a narrower sense of nephropathy without inflammation or neoplasia, [2] in which sense it is distinguished from nephritis, which involves inflammation.
Non-contrast CT (at left) showing peripelvic fluid accumulations, which may be hydronephrosis. CT urography (at right) reveals non-dilated calyces and pelvises. The fluid accumulations are thus peripelvic cysts. Parapelvic cysts originate from around the kidney at the adjacent renal parenchyma, and plunge into the renal sinus. Peripelvic cysts ...
Kidney showing circumscribed calcium deposits together with a partial stag horn calculus. Nephrocalcinosis, once known as Albright's calcinosis after Fuller Albright, is a term originally used to describe the deposition of poorly soluble calcium salts in the renal parenchyma due to hyperparathyroidism.