Chen Wen-Yin, Lin Ching-Nan, Chao Chien-Shun, Yan-Sheng Lin Mike, Mak Chee-Wai, Chuang Shih-Sung, Tzeng Ching-Cherng, Huang Kuo-Feng
Department of Obstetrics and Gynecology, Chi-Mei Medical Center, Tainan City, Taiwan, Republic of China.
Prenat Diagn. 2003 Nov;23(11):927-31. doi: 10.1002/pd.727.
Although congenital mesoblastic nephroma (CMN) is a rare benign congenital renal tumor, it is the most common solid renal tumor in the newborn period. The most common presentation of congenital mesoblastic nephroma is polyhydramnios, and only one case with prenatal fetal hydrops has been previously reported. Prenatal diagnosis of CMN has previously been made on the basis of the findings of sonography in the third trimester, and magnetic resonance imaging (MRI)-based diagnosis has been reported recently. Here we report a case of prenatally diagnosed classical type CMN diagnosed at 22 + 3 weeks of gestation based on the findings of sonography and magnetic resonance imaging. The characteristic imaging findings in this case were fetal hydrops and polyhydramnios. To our knowledge, this is the youngest reported gestational age for prenatal diagnosis of CMN and it is the second case of CMN associated with fetal hydrops detected prenatally.
虽然先天性中胚层肾瘤（CMN）是一种罕见的良性先天性肾肿瘤，但它是新生儿期最常见的实性肾肿瘤。先天性中胚层肾瘤最常见的表现是羊水过多，此前仅报道过1例产前胎儿水肿的病例。CMN的产前诊断以前是基于孕晚期超声检查结果做出的，最近有基于磁共振成像（MRI）的诊断报道。在此，我们报告1例在妊娠22 + 3周时基于超声和磁共振成像检查结果产前诊断为经典型CMN的病例。该病例的特征性影像学表现为胎儿水肿和羊水过多。据我们所知，这是报道的CMN产前诊断中最年轻的孕周，也是产前检测到的第2例与胎儿水肿相关的CMN病例。
