Clinical implications of first-trimester ultrasound dating in singleton pregnancies obtained through in vitro fertilization.

Background: In pregnancies obtained by in-vitro fertilization (IVF) the exact day of conception is known. For that reason, IVF pregnancies are currently dated according to the day of oocytes retrieval and consequent embryo transfer. The aim of the present study is to determine whether the knowledge of the exact day of conception in IVF pregnancies is a sufficient argument against dating these pregnancies by first trimester ultrasound measurement of the crown-rump length (CRL), as it is recommended in natural conceptions.

Intrauterine Ultrasound-Guided Laser Coagulation as a First Step for Treatment of Prenatally Complicated Bronchopulmonary Sequestration: Our Experience and Literature Review.

Introduction:  Prenatal ultrasound-guided laser coagulation (USLC) for complicated bronchopulmonary sequestrations has been described but a consensus on the procedure and on the following management is still lacking. We present our experience and provide a literature review.

Methods:  Retrospective review of patients treated in our center.