These are the options to access the full texts of the publication actas. The two important questions about megaureter are whether there is reflux backwash of urine causing the megaureter or whether there is blockage at the. The primary obstructive megaureter is caused by a prevesical aperistaltic ureter segment, which causes a dilatation of the prestenotic ureter. We examined renal function and urinary drainage of children with primary megaureter pmu in dependence on conservative or operative treatment. Megaureter is defined as a ureter that exceeds the upper limits of normal size. Malformaciones urogenitales 2011 linkedin slideshare. A megaureter is a ureter that is much wider than normal. The first cgm was reported by chaterjee sk in 1964.
Primary obstructive megaureter with giant ureteral stone. Since then, a small number of patients with cgm have been reported. The ureteral caliber can be reduced by excising the distal redundant ureter hendren technique or plication kalicinski technique, starr technique to achieve a satisfactory antireflux mechanism. Often it is diagnosed by ultrasound while a woman is still pregnant. R zubieta a, r castillo g, jm escala a, m varela a.
The differential diagnosis of anh, in order of likelihood, includes transient primary hydronephrosis, ureteropelvic junction obstruction upjo, vesicoureteric reflux vur, ureterovesical junction obstruction uvjo or primary nonobstructive megaureter, ureterocele. Pdf reflujo vesicoureteral secundario al tratamiento endoscopico. Endoureterotomy for treatment of primary obstructive. Primary megaureter is due to obstructed or refluxing vesicoureteral junction, while secondary megaureter is caused by bladder outlet obstruction. A 19yearold male patient was admitted with flank pain, which had lasted intermittently for four years. Megaureter article about megaureter by the free dictionary. If there is reflux, the diagnosis is refluxing megaureter or megaureter.
Uma conversa franca com os candidatos a fe em jesus, 1. A ureter that is wider than 38 inch is a megaureter. Megaureter des oberpolsystems bei einer doppelniere rechts. The different types of megaureters are described below. Megaureter and other congenital ureteral anomalies. A megaureter is an anomaly with a dilated ureter of more than 78 mm, the further division is made according to the cause. A megaureter large ureter is when a ureter is wider than threeeighths of an inch. Goslingthe vesicoureteric junction in three cases of primary obstructive megaureter associated with. Intravenous pyelography revealed a huge left megaureter with a stone in the lower end and grade v hydronephrosis. Puede ser obstructivo, secundario a reflujo o no obstructivo. Primary megaureter detected by prenatal ultrasonography. To describe a new approach to the treatment of primary obstructive megaureter pomu using endoscopic endoureterotomy.
Tratamiento del megaureter congenito obstructivo primario. Each category is further subdivided into 1 refluxing nonobstructing megaureter and 2 nonrefluxing obstructing megaureter. Megaloureter definition of megaloureter by medical. Megaureter is an abnormality of one or both of the ureters of a child. Ureters are the two funnelshaped tubes that carry urine from the kidneys to the bladder. A left ureterolithotomy, left nipple ureteroneocystostomy, and psoas hitch operation was. She hoped for surgical intervention before becoming pregnant. Megaureter, the accepted term for the dilated ureter, is divided into primary congenital and secondary categories. By computed tomography and retrograde pyelography, she was diagnosed with adult left primary megaureter. Megaureter geralmente diagnosticada por ultrasomfeto. Megaureter is a medical anomaly whereby the ureter is abnormally dilated.
Although rare, primary megaureter is responsible for up to 20% of hydronephrosis cases in neonates. Megaureter knowledge for medical students and physicians. A megaureter refers to an expanded or widened ureter that does not function normally. Primary obstructive megaureter is an uncommon disease in adults. The anomaly is often associated with other defects or anomalies. The size of a megaureter is usually greater than 7. Megaureter primario no refluyente detectado prenatalmente. Teklali praticien hospitalier, chirurgie pediatrique. About half of the patients with megaureter are asymptomatic.
Totally laparoscopic repair of primary obstructive. Congenital giant megaureter cgm is an extremely rare condition, which is defined as the lumen of a ureter is congenitally, focally and segmentally dilated to more than 10 times of the normal diameter, in presence of normal bladder volume and function. If primary megaureter was identified, after 1 month the children underwent 99tmdmsa, diuretic 99tmdtpa, and intravenous urography. She had a history of being treated for pyelonephritis three times. A rare condition where the patient is born with an abnormally dilated ureter. Laparoscopic nephroureterectomy for adult patient with. The two important questions about megaureter are whether there is reflux backwash of urine causing the megaureter or whether there is blockage at the ureterovesical junction causing megaureter figure 1. Congenital megaureter is an uncommon condition which is more common in males, may be bilateral, and is often associated with other congenital anomalies. The retrospective analysis covering the years 1994 to 2000 comprised children at an age of 07 years with 35 pmu. Or your child may also have imaging tests to look at the urinary tract. The cause is thought to be aperistalsis of the distal ureter, leading to dilatation the cutoff value for megaureter is when it is wider than 6 or 7 mm.
Renal function and urine drainage after conservative or. In children, any ureter greater than 7 mm in diameter is considered a megaureter based on measurements in fetuses greater than 30 weeks gestation and children download pdf. These distinctions are based on radiographic and clinical findings. This can result from an abnormality of the ureter itself primary or from the bladder being blocked secondary. A 29yearold female with a complaint of abdominal distension was referred to our hospital. Eight infants with primary megaureter bilateralin 3 cases were identified, for a total of 11 renal units for study.
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