TY - CHAP M1 - Book, Section TI - Mesoblastic Nephroma A1 - Bianchi, Diana W. A1 - Crombleholme, Timothy M. A1 - D'Alton, Mary E. A1 - Malone, Fergal D. PY - 2015 T2 - Fetology: Diagnosis and Management of the Fetal Patient, 2e AB - Key PointsMost common congenital renal tumor.Sonographically, mesoblastic nephroma is most often a unilateral solid mass with nodular densities.Differential diagnosis includes hydronephrosis, multicystic dysplastic kidney, and nephroblastoma (Wilms’ tumor).Mesoblastic nephroma can be cystic in areas due to hemorrhage with cystic degeneration.There are 3 histologic variants: classic, cellular, and mixed.50% deliver prior to 34 weeks of gestation and are associated with polyhydramnios; 23% are hypertensive.Surgical resection is curative - local recurrence and metastases usually associated with the cellular variant. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - obgyn.mhmedical.com/content.aspx?aid=1106400956 ER -