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DOI: 10.1177/875647939701300604 Congenital Mesoblastic NephromeaAntenatal and Postnatal Sonographic Appearance With Pathologic CorrelationUltrasound Section, Department of Radiology, The M.S. Hershey Medical Center, The Penn State Geisinger Health System, Hershey, Pennsylvania; Department of Radiology, The M.S. Hershey Medical Center, The Penn State Geisinger Health System, P.O. Box 850, 500 University Drive, Hershey, PA 17033
Ultrasound Section, Department of Radiology, The M.S. Hershey Medical Center, The Penn State Geisinger Health System, Hershey, Pennsylvania Congenital mesoblastic nephroma is the most common neonatal renal tumor. Although the mass may be large and is usually associated with polyhydramnios, these tumors rarely recur and rarely metastasize. Presented is a case, with clinical-pathologic correlation, of a pregnant female with size-greater-than-dates secondary to polyhydramnios associated with a congenital mesoblastic nephroma. This diagnosis should be considered in any fetus with polyhydramnios and a large flank/abdominal mass.
Key Words: congenital mesoblastic nephroma neonates polyhydramnios renal masses size-greater-than-dates
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