Posterior Urethral Valve and Prenataly Resolved Multicystic Dysplastic Kidney

Abstract Multicystic dysplastic kidney is a rare congenital anomaly of the and urinary tract. The association with posterior urethral valve also very rare. Here we present patient both entities prenatal resolution cysts. A 10-week old baby was referred for nephrourological work up due to diagnosis left multicystic kidney. He had serial US scans during pregnancy. Immediately before delivery cysts were not seen (prenatal resolution). There no extrarenal anomalies. first postnatal ultrasound scan revealed normal sized right without dilatation pelvicalyceal system. bladder thickness wall. Technetium-99m dimercaptosuccinic acid showed activity on side, appeared normal. At two months age, poor steam observed additional urologic indicated clinical suspicion PUV. Voiding urethrocystography underwent cytoscopic resection. Conclusion: We anomalies tract involution that extremely event as in our case. Presence must be suspected male stream even when his system appears