What does hydronephrosis and Hydroureter mean?
What does hydronephrosis and Hydroureter mean?
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.
What causes a megaureter?
A megaureter (“large ureter”) is when a ureter is wider than three-eighths of an inch. This can result from an abnormality of the ureter itself (primary) or from the bladder being blocked (secondary).
What is a megaureter?
Megaureter is a ureter that is much wider than normal. The ureters are the tubes that carry urine from the kidneys to the bladder. A ureter that is wider than 3/8 inch is a megaureter. A megaureter may not drain urine normally. Urine may back up into the kidneys.
What causes a 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 the size of ureter?
Ureters. The ureters are 6 to 8 mm (0.25–0.38 in) in diameter and travel about 70 cm (28 in) to their insertions in the dorsal bladder neck, or trigone, close to the urethra. The distal 3 to 5 cm of each ureter courses within the bladder wall.
What is the normal size of ureter?
When to use hydroureter and megaureter in ureterics?
Hydroureter refers to abnormal dilation (>3 mm) of the ureter and may occur in combination with hydronephrosis . The term, megaureter, is usually reserved for ureters >7 mm in diameter. The term hydroureteronephrosis (or hydronephroureterosis) may be used when ureteric dilatation occurs in the presence of hydronephrosis .
Is there hydronephrosis in a Congenital megaureter?
In non-refluxing unobstructed primary megaureter, there is absent or only a minor degree of hydronephrosis. Although rare, a congenital megaureter may co-exist with congenital megacalyces 1, making the assessment of hydronephrosis more difficult.
What do you need to know about hydroureter and hydronephrosis?
Hydronephrosis and hydroureter are common clinical conditions encountered not only by urologists but also by emergency medicine specialists and primary care physicians. Hydronephrosis is defined as distention of the renal calyces and pelvis with urine as a result of obstruction of the outflow of urine distal to the renal pelvis.
What kind of dilation is a hydroureter?
Hydroureter refers to abnormal dilation (>3 mm) of the ureter and may occur in combination with hydronephrosis . The term, megaureter, is usually reserved for ureters >7 mm in diameter.
