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Implicancias del diagnóstico antenatal de dilatación ureteral / Prenatal diagnosis of ureteral dilation
Gana, R; Pinilla, C; Inzunza, A; Valentini, P; Yamamoto, M; Novoa, J; Rodríguez, N.
  • Gana, R; Hospital Padre Hurtado. CL
  • Pinilla, C; Hospital Padre Hurtado. CL
  • Inzunza, A; Hospital Padre Hurtado. CL
  • Valentini, P; Hospital Padre Hurtado. CL
  • Yamamoto, M; Hospital Padre Hurtado. CL
  • Novoa, J; Hospital Padre Hurtado. CL
  • Rodríguez, N; Hospital Padre Hurtado. CL
Rev. chil. urol ; 72(2): 202-205, 2007. tab
Article in Spanish | LILACS | ID: lil-545961
RESUMEN
Muchos de los hallazgos del diagnóstico antenatal de patología urológica son inespecíficos y sólo nos permiten diferenciar pacientes con un mayor riesgo de infección urinaria o de perder función renal. El hecho de identificar un uréter en la ecografía prenatal es un hallazgo inespecífico, que aún no tenemos claro qué significa y qué pronóstico tiene para nuestros pacientes. A partir de noviembre de 1999, tenemos un protocolo prospectivo para el seguimiento y manejo de pacientes con diagnóstico antenatal de patología urológica. Se revisó en forma retrospectiva los pacientes en que hubo dilatación ureteral en la ecografía prenatal.180 pacientes han sido referidos y seguidos según protocolo. En 21 pacientes (11.7 por ciento) se ha hecho diagnóstico de dilatación ureteral en la ecografía prenatal. Once hombres y 10 mujeres. Los diagnósticos postnatales de estos pacientes fueron: 4 pacientes con doble sistema pieloureteral; 2 pacientes con megauréteres; 1paciente con una cloaca; 5 pacientes con dilataciones transitorias; 2 pacientes con ureterocele en sistemaúnico; 1 paciente con reflujo vesicoureteral en un sistema único y con un riñón multicístico en el contralateral; 1 paciente con valvas de uretra posterior y 5 pacientes con obstrucción pieloureteral. Un total de 13 pacientes de los 21 requirieron cirugía (62por ciento) y 8 se manejaron médicamente (38.09 por ciento).El hecho de identificar el uréter dilatado en la ecografía prenatal nos permite identificar una población prenatal de riesgo, ya que un 57,1 por ciento de nuestros pacientes requirieron de cirugía. Llama la atención que 5 pacientes en que se vio el uréter dilatado en la ecografía prenatal, terminaron operándose de obstrucción pieloureteral. Esto apoya la hipótesis de que estas obstrucciones sean secundarias a dilataciones ureterales prenatales. El consejo prenatal tiene que ser dado con cautela y por gente con experiencia, ya que a pesar de existir un riesgo elevado de cirugía...
ABSTRACT
Prenatal diagnosis is usually non specific and only allows for early detection of patients with a higher risk of developing urinary tract infections or loss of renal function. The identification of the ureter in a prenatal ultrasound is a nonspecific finding. The relevance of this is unknown. A prospective protocol for the management and follow up of patients with antenatal diagnosis of urologicmal formations was started in 1999. We retrospectively review our patients who presented a ureteral dilatation in the antenatal ultrasound.180 patients were referred and follow up was carried out according to protocol. 21 patients (11.7 percent) had ureteral dilatation on the prenatal ultrasound, 11 male and 10 female. The following post natal diagnoses were registered: 4 patients had a duplex kidney, 2 patients had megaureter, 1 patient had a cloaca, 5 patients had transitory dilatations, 2 patients had ureterocele in an single system, 1 patient had VUR in a single system and a contralateral muticystic kidney, 1 patient had posterior urethral valves, and 5 patients had ureteropelvic obstruction.13 of 21 patients required surgery (62 percent), the other 8 required only prophylaxis and follow up (38.09 percent). Being able to identify a dilated ureter in an prenatal ultrasound allowed us to define a high risk group, in which 62 percent required surgery. Of the patients in this group, it is noteworthy that 5 patients in whom a dilated ureter was visualized were operated on for ureteropelvic obstruction. This fact supports the idea that obstructions are secondary to antenatal ureteral dilations. Antenatal advice should be given carefully and by experienced personnel because, although there was a high percentage of surgery in this group, there was also a group of patients that only required antibiotics prophylaxis and image monitoring.
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Index: LILACS (Americas) Main subject: Ureteral Diseases / Ultrasonography, Prenatal / Dilatation, Pathologic Type of study: Diagnostic study / Etiology study / Practice guideline / Observational study / Prognostic study / Risk factors / Screening study Limits: Female / Humans / Male / Pregnancy Language: Spanish Journal: Rev. chil. urol Journal subject: Urology Year: 2007 Type: Article Affiliation country: Chile Institution/Affiliation country: Hospital Padre Hurtado/CL

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Index: LILACS (Americas) Main subject: Ureteral Diseases / Ultrasonography, Prenatal / Dilatation, Pathologic Type of study: Diagnostic study / Etiology study / Practice guideline / Observational study / Prognostic study / Risk factors / Screening study Limits: Female / Humans / Male / Pregnancy Language: Spanish Journal: Rev. chil. urol Journal subject: Urology Year: 2007 Type: Article Affiliation country: Chile Institution/Affiliation country: Hospital Padre Hurtado/CL