*  Director of Imaging Diagnosis Department, Maternal Tudu Hospital, 284 Cong Quynh St Dist 1, Hochimin City, Vietnam.  
** Inner Vision Women's Ultrasound, Nashville, Tennessee, USA.
  

Images 3,4: Image 3 shows a transverse view of the kidney tumor. Image 4 shows a vascularization of the tumor.

Images 5,6: Images show a vascularization of the tumor.

Images 7: increased amount of the amniotic fluid.

References:

1. Vadeyar S, Ramsey M, James D, O'Neill D. Prenatal diagnosis of congenital Wilms' tumor(nephroblastoma) presenting as fetal hydrops. Ultrasound Obstet Gynecol 2000; 16:80-83.
2. Hrabovsky EE, Othrsen HB, deLorimier A, Kelalis P, Beckwith JB, Takashima J. WIlms' tumor in the neonate: a report from the national Wilms' tumor study. J Pediatr Surg 1986; 213:385-387.
3. Breslow NE, Beckwith JB. Epidemiological features of Wilms' tumor: results of the National Wilms' tumor study. J Natl Cancer Inst 1982; 68:429-436.
4. Beckwith JB. Wilms' tumor and other renal tumors of childhood: a selective review from the National Wilms' tumor Study Pahology Center. Human Pathol 1983;14:481-492.
5.Ohmichi M, Tasaka K, Sugita N, Kamata S, Hasegawa T, Tanizawa O. Hydramnios associated with congenital mesoblastic nephroma: case report. Obstet Gynecol 1989;74:469-471.