How often is a UPJ obstruction bilateral? What are six complications of horseshoe kidney aside from increased UPJ obstruction? What is a congenital UPJ obstruction? What is the radiographic appearance of a congenital UPJ obstruction? With what congenital anomaly may a congenital UPJ obstruction be associated? Book traversal links for UPJ ‹ Why is it important to diagnose intrarenal reflux? Up How often is a UPJ obstruction bilateral? ›