Assessing resolution of isolated hydronephrosis – is APPD superior to the SFU system?

Antenatal scanning detects urinary tract dilatation in 1-5% of pregnancies. Isolated hydronephrosis (i.e., that not due to secondary dilatation e.g. bladder dysfunction) is known to resolve or improve in most; some patients may, however, require intervention through deterioration of obstruction...