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Year : 2010  |  Volume : 26  |  Issue : 4  |  Page : 494-496

Pelvis/cortex ratio: A sonographic marker of pelvi ureteric junction obstruction in children

Paediatric Urology and Radiology, Departments, Sri Ramachandra Medical College and Research Institute, Chennai, India

Correspondence Address:
Ramesh Babu
3/5 Jai Nagar 7th St, Arumbakkam
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-1591.74437

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Objectives : The aim of the study is to document pelvis/cortex ratio (P/C ratio) in children presenting with antenatally detected hydronephrosis and determine whether it could be used as a sonographic marker of Pelvi ureteric junction (PUJ) obstruction. Materials and Methods : All the children presenting with unilateral fetal hydronephrosis (PUJ) between Jan 2007 and March 2008 were included. Ultrasonogram was performed by the same sonologist and P/C ratio was determined by dividing maximum anteroposterior pelvic diameter with maximum cortical thickness. Results : Among a total of 111 children, 87 (78%) improved on conservative management while 24 (22%) required pyeloplasty. The mean (± SD) P/C ratio was 2.7 ± 2.18 in those improved on conservative management while 13.5 ± 1.48 in those who required surgery (P < 0.01). All (22/22) children with P/C ratio of 12 or above required pyeloplasty, while 2/5 with P/C ratio 8-12 and none (0/84) with P/C ratio less than 8 required pyeloplasty (P<0.01). Conclusions : P/C ratio could be used as a marker of PUJ obstruction in children with hydronephrosis.

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