You are called to the neonatal intensive care unit to evaluate a 16-hour-old girl with progressive abdominal distention and respiratory distress requiring 6L HFNC. On examination she has a distended abdomen with a palpable mass above the umbilicus. An abdominal radiograph demonstrates a rounded hypoechoic mass extending from the pelvis to the upper abdomen. There has been no urine output since birth despite intravenous fluids for the last 4 hours. The genitourinary examination is shown below. What is the best next step in her management?

a Diverting colostomy for anorectal malformation
b Suprapubic bladder catheterization
c Incision of the imperforate hymen
d Watchful waiting
e Placement of vaginostomy tube

a Diverting colostomy for anorectal malformation
b Suprapubic bladder catheterization
c Incision of the imperforate hymen
d Watchful waiting
e Placement of vaginostomy tube