pelviectasis definition
Pyelectasis is a dilation of the renal pelvis. The term is derived from the prefix pyelo-meaning pelvis and ectasia meaning dilation or distension.It is a relatively common ultrasound finding and is three times more common in male fetuses.In most cases pyelectasis resolves normally, having no ill effects on the baby.he term is derived from the prefix pyelo-meaning pelvis and ectasia meaning dilation or distension. It is a relatively common ultrasound finding and is three times more common in male fetuses. In most cases pyelectasis resolves normally, having no ill effects on the baby.