Prenatal MRI Findings of Mesoblastic Nephroma: A Case Report

We here present the antenatal magnetic resonance imaging (MRI) findings of mesoblastic nephroma in a fetus. A profitable design using single-shot fast spin echo (SSFSE) MRI sequence was applied for recognition of the abdominal mass with renal origin in the mobile fetus. SSFSE could significantly shorten the scanning time, therefore we got satisfactory images without fetal sedation. The image findings and differential diagnosis are also discussed. Although unusual huge size as in this case, congenital mesoblastic nephroma (CMN) could be considered when encountering a solid fetal renal tumor.