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2021, Number 4

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Acta Med 2021; 19 (4)

Ureteropelvic junction (UPJ) obstruction

Chávez LMA, Lozano ZH, Rodríguez WLO
Full text How to cite this article 10.35366/102543

DOI

DOI: 10.35366/102543
URL: https://dx.doi.org/10.35366/102543

Language: Spanish
References: 8
Page: 544-546
PDF size: 132.81 Kb.


Key words:

Ureteropelvic junction obstruction (UPJ), pelvocaliectasis.

ABSTRACT

Ureteropyelic junction (UPJ) obstruction is the most common form of urinary tract obstruction in children, it can be diagnosed prenatally or in childhood. Hydronephrosis as a prenatal ultrasound finding is highly suggestive for diagnosis. In infants' symptoms of urinary tract infection are frequent, highlighting intermittent abdominal pain in the flank, hematuria, and fever. This is a newborn male patient, the prenatal ultrasound showed hydronephrosis, a postnatal ultrasound is performed that reveals a marked pyelocaliectasis that ends abruptly at the ureteropyelic junction (UPJ) and the caliber of the distal ureter is normal, a finding that practically confirms the diagnosis in this type of patients, therefore prenatal and postnatal ultrasound is the ideal diagnostic imaging tool.


REFERENCES

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  2. Rooks VJ, Lebowitz RL. Extrinsic ureteropelvic junction obstruction from a crossing renal vessel: demography and imaging. Pediatr Radiol. 2001; 31 (2): 120-124.

  3. Frauscher F, Janetschek G, Helweg G, Strasser H, Bartsch G, zur Nedden D. Crossing vessels at the ureteropelvic junction: detection with contrast-enhanced color Doppler imaging. Radiology. 1999; 210 (3): 727-731.

  4. Amling CL, O'Hara SM, Wiener JS, Schaeffer CS, King LR. Renal ultrasound changes after pyeloplasty in children with ureteropelvic junction obstruction: long-term outcome in 47 renal units. J Urol. 1996; 156 (6): 2020-2024.

  5. Brucher N, Vial J, Baunin C, Labarre D, Meyrignac O, Juricic M et al. Non-contrast-enhanced MR angiography using time-spin labelling inversion pulse technique for detecting crossing renal vessels in children with symptomatic ureteropelvic junction obstruction: comparison with surgical findings. Eur Radiol. 2016; 26 (8): 2697-2704.

  6. Li R, Lightfoot M, Alsyouf M, Nicolay L, Baldwin DD, Chamberlin DA. Diagnosis and management of ureteral fibroepithelial polyps in children: a new treatment algorithm. J Pediatr Urol. 2015; 11 (1): 22.e1-6.

  7. Mei H, Pu J, Yang C, Zhang H, Zheng L, Tong Q. Laparoscopic versus open pyeloplasty for ureteropelvic junction obstruction in children: a systematic review and meta-analysis. J Endourol. 2011; 25 (5): 727-736.

  8. Samarasekera D, Chew BH. Endopyelotomy still has an important role in the management of ureteropelvic junction obstruction. Can Urol Assoc J. 2011; 5 (2): 134-136.




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Acta Med. 2021;19