ABSTRACT
An abnormality involving the genitourinary tract is detected in
one in 50 to one in 100 pregnancies, depending on the
sonographic criteria.1,2 The goal of management is to
recognize and treat congenital anomalies that may adversely
affect renal function or cause urinary tract infection (UTI) or
sepsis. Many structural abnormalities of the urinary tract are
characterized by hydronephrosis, which frequently is assumed
to be obstructive. However, often antenatal hydronephrosis is
not caused by obstruction; examples include vesico-ureteral
reflux (VUR), multicystic kidney, and certain abnormalities of
the ureteropelvic and ureterovesical junction.
