Pelviureteric junction obstruction

Pelviureteric junction obstruction Ovarian cyst Ovarian torsion Hydrometrocolpos... 

Freedman ER, Rickwood AMK (1994) Prenatally diagnosed pelviureteric junction obstruction a benign condition J Pediatr Surg 29 769-772... 

McClinton S, Steyn H, Hussey JR (1993) Retrograde balloon dilatation for pelviureteric junction obstruction. Br JUrol 71 152-155... 

Ylinen E, Ala-Houhala M, Wikstrom S (2004) Outcome of patients with antenatally detected pelviureteric junction obstruction. Pediatr Nephrol 19 880-887... 

There are various causes of urinary tract obstruction, which are either benign or malignant and can be further categorized based upon the site of obstruction, be it at the pelviureteric junction (PUJ), along the length of the ureter, or at the vesicoureteric junction (VUJ). 

The pelviureteric junction is by far the most common site of urinary obstruction in children (see also Chaps. 5 and 26). The obstruction may be caused by some intraluminal lesion, by a functional abnormality of the proximal ureter leading to an intrinsic obstruction, by external compression, usually because of an aberrant renal vessel, or it may be secondary to some other urinary tract abnormality, usually vesicoureteric reflux causing secondary obstruction. 

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