Resumen

MORATA ALBA, J.; PEREZ GARCIA, B.  y  CARPENA LUCAS, P. J.. Abdominal pain is not always what it seems. Rev Pediatr Aten Primaria [online]. 2015, vol.17, n.67, pp.e189-e192. ISSN 1139-7632.  https://dx.doi.org/10.4321/S1139-76322015000400008.

Ureteropelvic junction obstruction is the most common cause of pediatric hydronephrosis. The typical presentation of hydronephrosis has changed since the widespread use of antenatal ultrasonography and nowadays diagnosis may be set before symptoms begin. But there are cases of late diagnosis in preschool or school age.

Palabras clave : Hydronephrosis; Ultrasonography.

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