What is a obstructive Megaureter?
What is a obstructive Megaureter?
Introduction. Primary obstructive megaureter (POM) is one of the most commonly reported malformations of the urinary system in children. The term ‘Megaureter’ was introduced by Caulk in 1923 to describe a severe dilation of the distal ureter affecting a 32-year-old female.
Is Megaureter congenital?
Congenital primary megaureter (PM) is an idiopathic condition in which the bladder and bladder outlet are normal but the ureter is dilated to some extent. It may be obstructed, refluxing or unobstructed and not refluxing.
What is primary hydronephrosis?
What is hydronephrosis? Hydronephrosis is a condition that typically occurs when a kidney swells due to urine failing to properly drain from the kidney to the bladder. This swelling most commonly affects only one kidney, but it can involve both kidneys. Hydronephrosis isn’t a primary disease.
What is a ureteral reimplantation?
The ureters are the tubes that carry urine from the kidneys to the bladder. Ureteral reimplantation is surgery to change the position of these tubes where they enter the bladder wall.
How serious is hydronephrosis?
Left untreated, severe hydronephrosis can lead to permanent kidney damage. Rarely, it can cause kidney failure. But hydronephrosis typically affects only one kidney and the other kidney can do the work for both.
What causes Megaureter?
What causes a megaureter in a child? A megaureter occurs when a baby is growing in the uterus. A normal ureter has a layer of muscle tissue. This muscle layer helps send urine down the tube with movement called peristalsis.
How long does ureteral reimplantation last?
The usual length of stay is 2 to 4 days. You may need to stay longer if there are any complications.
How much does ureteral reimplantation surgery cost?
The median hospital cost for RALUR was $9,128 versus $7,273 for open ureteral reimplantation, however, there was a considerable variability from the differential experience among centers expressed as complications, and the higher cost of RALUR was associated with a significantly higher rate of complications.
What is the prevalence of primary obstructive megaureter (pom)?
Obstruction is bilateral in 10%-20% of obstructed megaureter cases. Primary obstructive megaureter (POM) is common in children, with an increasing incidence since the advent of fetal ultrasonograpy.
Is obstructive megaureter a misnomer?
Obstructive megaureter is, in itself, a misnomer because most cases demonstrate only partial obstruction. Although this entity is rare, the principles of its evaluation and management may apply to a wide spectrum of ureteral abnormalities; consequently, a thorough understanding has a wide application.
What is the pathophysiology of primary megaureter obstruction?
Primary obstructing megaureter is caused by a structural alteration in the muscular layers of the distal ureter, which is characterized, to varying degrees, by diminished or absent longitudinal muscle fibers, hypertrophied or hyperplastic circular muscle fibers, or increased connective-tissue deposition.
What causes megaureter in adults?
Megaureter in an adult is often due to distal obstruction, occasionally gross reflux or commonly idiopathic (i.e. developmental). Even if idiopathic the patient can be symptomatic due to urinary stasis leading to recurrent infection or calculi.
