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Kidney duplex

Avni FE, Nicaise N, Hall M, Janssens F, Collier F, Matos C, Metens T (2001) The role of MR imaging for the assessment of complicated duplex kidneys in children preliminary report. Pediatr Radiol 31 215-223... [Pg.34]

Mackie GG, Stephens FD (1975) Duplex kidneys a correlation of renal dysplasia with position of the ureteral orifice. JUrol 114 274-280... [Pg.35]

Cystic) Dysplasia of the Upper Pole 116 Other Types of Obstruction in Duplex Kidney 116... [Pg.89]

Ureterocele (ucele) represents cystic dilatation of the intravesical segment of the ureter. It is more common with duplex kidneys. When it is associated with a single system, the ucele is commonly intravesical. An ectopic ucele may also be associated with a multicystic dysplastic kidney (Fig. 5.32). On US, the ucele appears as a cystic structure within the bladder that is connected with the ureter (Fig. 5.33) the upper urinary tract is not necessarily obstructed or dilated. On IVU, after injection, the ucele appears as a filling defect within the bladder, especially on early films, and it opacifies progressively (Fig. 5.34). [Pg.107]

The treatment is similar to that for ucele in duplex kidneys depending on the degree of secondary obstruction (Gonzales 1992). It is worth noting that a ucele may be associated with a multicystic dysplastic kidney. [Pg.107]

Uncomplicated duplex kidney is usually detected during a US examination that demonstrates two distinct renal hila separated by a bridge of normal parenchyma (Fig. 5.38). Unless there is a clinical indication, no further examination is necessary. [Pg.109]

Many complications may occur and involve any of the poles of the duplex kidney, sometimes both, such as dilatation of the upper or lower pole, pyonephrosis, VUR, ectopic ureter, or ucele. [Pg.109]

Abnormal duplex kidneys used to be and are still detected during the work-up of urinary tract infection or urinary dribbling in girls. They are more and more often demonstrated during fetal life. In utero, it is possible to differentiate between the two collecting systems particularly if one is dilated. It is even possible to differentiate between ectopic ureter and ucele in utero (Joseph et al. 1989 Avni et al. 1991 Abuhamad et al. 1996 Vergani et al. 1999 Caione et al. 1989 Jee et al. 1993). Other forms of presentation include interlabial mass in girls or bladder outlet obstruction. Both conditions are related to urethral prolapse of the ucele (Nussbaum 1983). [Pg.109]

Ureterocele is the other anomaly that can be associated with the upper pole of a duplex kidney. [Pg.111]

A wide variety of anomalies occur in duplex kidneys. Imaging is mandatory in order to characterize the precise anatomy and to orient surgery. [Pg.117]

Bellah RD, Long FR, Canning DA (1995) Ureterocele eversion with VUR in duplex kidneys. AJR 165 409-413 Ben Ami T, Gayer G, Herz M et al (1989) The natural history of VUR in the lower-pole of duplex kidneys. Pediatr Radiol 19 308-310... [Pg.119]

Mandell J, Peters CA, Retik AB (1990) Current concepts in the perinatal diagnosis and management of hydronephrosis. Urol Clin N Amer 17 247-262 Matsumoto JS (1986) Acquired lesions involving the ureter in childhood. Semin Roentgen 21 166-167 McGrath MA, Estroff J, Lebowitz RL (1987) The coexistence of ohstruction at the UPJ and UVJ. AJR 149 403-406 Mckie GG, Stephens FD (1975) Duplex kidneys a correlation of renal dysplasia with position of ureteral orifice. J Urol 114 274-280... [Pg.120]

Yo-yo VUR refers to ureteroureteric or pyelopelvic reflux occurring into incomplete duplex kidneys. [Pg.222]

VUR may occur in both moieties of a duplex kidney, but it is much more frequent into the lower pole (Fig. 11.24). This is associated with the more lateral opening of the corresponding ureteral orifice. This type of VUR may be associated with renal damage at the corresponding lower pole (reflux nephropathy see below). Severe VUR into the lower pole may be associated with significant ureterohydronephrosis, which may obscure the presence of a duplex system. VUR into a lower pole still has a potential of spontaneous resolution just as VUR can spontaneously resolve into a single collecting system (Ben-Ami et al. 1989 Bisset and Strife 1987 Claudon et al. 1999). [Pg.225]

Inadvertent catheterization of an ureterocele during a VCU may lead to VUR into an upper pole of a duplex kidney. Reflux into an upper pole also occurs after endoscopic unroofing of an ectopic ureterocele (Fig. 11.26) (Blyth et al. 1993). [Pg.225]

The main dilemma in the investigation of upper urinary tract dilatation is to distinguish between dilatation with obstruction, dilatation with no obstruction and dilatation associated with vesicoureteric reflux (VUR). At times the obstructive cause is obvious, e.g., duplex kidney with upper moiety dilatation due to a ureterocele or upper tract dilatation... [Pg.237]

Special mention of the duplex kidney should be made. The second commonest abnormality of the lower moiety is that of RPD (Fig. 12.4). [Pg.244]

Duplex kidney should always be borne in mind when one finds an abnormal kidney. [Pg.247]

Other etiologies for urinary tract dilatation include duplex kidneys complicated by a dilatation of the upper or the lower pole (Abuhamad et al. 1996 Vergani et al. 1999). Such anomalies can be associated with an ectopic extravesical ureter (Fig. 13.12) or an ectopic ureterocele (Fig. 13.13), which can be demonstrated in utero. [Pg.256]


See other pages where Kidney duplex is mentioned: [Pg.23]    [Pg.42]    [Pg.45]    [Pg.47]    [Pg.47]    [Pg.50]    [Pg.59]    [Pg.89]    [Pg.106]    [Pg.107]    [Pg.110]    [Pg.110]    [Pg.116]    [Pg.116]    [Pg.117]    [Pg.118]    [Pg.119]    [Pg.122]    [Pg.134]    [Pg.192]    [Pg.207]    [Pg.211]    [Pg.225]    [Pg.237]    [Pg.237]    [Pg.237]    [Pg.244]    [Pg.245]    [Pg.247]    [Pg.247]    [Pg.251]    [Pg.255]   
See also in sourсe #XX -- [ Pg.42 , Pg.45 , Pg.47 , Pg.50 , Pg.109 , Pg.110 , Pg.225 , Pg.247 , Pg.267 ]




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DUPLEX

Duplexe

Duplexer

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