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Prog. diagn. trat. prenat. (Ed. impr.) ; 16(4): 190-193, 2004. ilus
Article in Spanish | IBECS | ID: ibc-152056

ABSTRACT

Reportar un nuevo caso de diagnóstico prenatal de una entidad infrecuente (el 27 de los publicados) puede contribuir a establecer mejores estrategias diagnósticas y de manejo. Se establece un diagnóstico de nefroma mesoblástico congénito a las 31 semanas de gestación ante los hallazgos ecográficos de tumor renal sólido y polihidramnios. Se mantuvo conducta expectante con controles ambulatorios frecuentes. Las pruebas de bienestar fetal fueron correctas, el tamaño tumoral no se modificó y fue preciso una amniocentesis evacuadora, manteniéndose luego el volumen de líquido amniótico estable. A las 37 semanas se induce el parto y nace un feto varón por vía vaginal con buena vitalidad. Tras estudios neonatales, al octavo día se le practica nefrectomía y el estudio histológico confirma un nefroma mesoblástico congénito. Tras 1 año el niño sigue sano. El manejo antenatal del nefroma mesoblástico debe dirigirse al control del polihidramnios y sus complicaciones (parto prematuro y rotura prematura de membranas), así como al manejo atraumático del recién nacido para evitar la rotura tumoral. Dado que generalmente se trata de tumores benignos y no se asocian otras anomalías, el pronóstico es bueno con la nefrectomía neonatal (AU)


To report on a new case of prenatal diagnosis of an uncommon disease entity (the 27th reported case) to contribute to establishing better diagnostic and therapeutic strategies. A mesoblastic nephroma was diagnosed at 31 weeks of pregnancy based on ultrasound finding of a solid renal tumor and polyhydramnios. A wait and see attitude was adopted with frequent outpatient check-ups; the tests of fetal well-being were correct, tumor size remained unchanged, and amnioreduction by amniocentesis was required, although the volume of amniotic fluid remained stable thereafter. Labor was induced at 37 weeks and a male fetus was delivered vaginally, with good vitality. Following neonatal studies, nephrectomy was performed on day 8. The histological study confirmed that it was a congenital mesoblastic nephroma. One year later, the patient remains healthy. Antenatal management of mesoblastic nephroma should be aimed at controlling polyhydramnios and its complications (premature labor and premature membrane rupture), as well as non-traumatic handling of the newborn infant to avoid rupturing the tumor. Neonatal nephrectomy leads to good prognosis, since congenital mesoblastic nephroma is generally a benign tumor and is not associated with other anomalies (AU)


Subject(s)
Humans , Female , Pregnancy , Infant, Newborn , Nephroma, Mesoblastic/metabolism , Nephroma, Mesoblastic/pathology , Kidney Diseases/classification , Kidney Diseases/metabolism , Polyhydramnios/genetics , Diuresis/genetics , Osteonecrosis/pathology , Wilms Tumor/diagnosis , Fetal Diseases/metabolism , Nephroma, Mesoblastic/complications , Nephroma, Mesoblastic/diagnosis , Kidney Diseases/diagnosis , Kidney Diseases/genetics , Polyhydramnios/pathology , Diuresis/physiology , Osteonecrosis/metabolism , Wilms Tumor/pathology , Fetal Diseases/pathology
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