What is the Weigert Meyer rule?
By Rachel Newton
What is the Weigert Meyer rule?
Meyer-Weigert-Rule predicts the draining pattern of duplex ureters in bipolar renal duplications. The upper pole is normally seen as ectopic and therefore dysplastic due to obstruction, whereas the lower pole is related to vesicoureteral reflux.
What is Infundibulum in kidney?
The renal pelvis (or, more rarely, the renal infundibulum) forms part of the pelvicalyceal system of the kidney and is the connection between the calyces and the ureter.
What causes Hydroureter?
Hydroureter refers to dilation of the ureter(s) and is most often caused by obstruction of urine outflow due to blockage of the ureter(s) by calculi, chronic inflammation, luminal or intramural neoplasia, or accidental ligation during surgery.
What is Yo Yo reflux?
Yo-yo reflux is a rare clinical form of incomplete duplication of upper collecting system. Disorders in ureteric peristalsis at the site of ureteric fusion may cause yo-yo reflux. Another explanation of yo-yo reflux is the pressure gradient between two ureteric segments.
What is ureterocele in bladder?
A ureterocele is a swelling at the bottom of one of the ureters. Ureters are the tubes that carry urine from the kidney to the bladder. The swollen area can block urine flow. A ureterocele is a birth defect.
What is a dromedary hump in kidney?
Dromedary hump is a prominent focal bulge on the lateral border of the left kidney caused by splenic impression, which can mimic renal neoplasm. It is a benign anatomic variant and exhibits the same imaging characteristics as adjacent renal cortex with normal blood flow pattern on Doppler sonography.
What is VUR?
Vesicoureteral reflux (VUR) is a condition in which urine flows backward from the bladder to one or both ureters and sometimes to the kidneys. VUR is most common in infants and young children. Most children don’t have long-term problems from VUR.
What are calyces in kidney?
Your calyces are where urine collection begins. Each kidney has 6 to 10 calyces. They’re on the outer edges of your kidneys. With caliectasis, the calyces become dilated and swollen with extra fluid. It’s usually caused by another condition that affects the kidneys, such as a urinary tract infections (UTI).
What is Infundibulum anatomy?
The infundibulum (Latin: “funnel”) is the funnel-shaped portion of the right ventricle that opens into the pulmonary artery. Its narrowing is also called infundibular stenosis. Pulmonary stenosis is usually a congenital defect and may be associated with other cardiovascular congenital defects.
How is Hydroureter treated?
Treatment of hydronephrosis and hydroureter is aimed at restoring urine flow from the affected kidney. Depending on the underlying cause, medication or surgery may be needed to correct the problem.
What is the difference between hydronephrosis and Hydroureter?
Hydronephrosis is defined as dilatation and distension of the renal collecting system of one or both kidneys due to obstruction of urine outflow distal to the renal pelvis (i.e., ureter, urinary bladder, and urethra). Dilation of the ureter due to obstruction of urine outflow is called hydroureter.
