Successful Oocyte Retrieval, Fertilization, and Clinical Pregnancy with Low Serum -hCG on the Day of Oocyte Collection: A Reappraisal of the Definition of the Empty Follicle Syndrome.

Objective: To describe a case of successful oocyte retrieval, fertilization and clinical pregnancy despite very low -hCG level, twelve hours after ovulation trigger.

Design: Case report. .

Diagnosis of Placental Position by Early First-Trimester Ultrasound: A Pilot Study.

Objective: Conventional wisdom is that placental location cannot be identified before 8 weeks' gestation when the placenta first becomes hyperechogenic on ultrasound. We sought to evaluate whether placental location could be reliably diagnosed between 5 and 6 weeks' gestation.

Materials And Methods: This was a retrospective analysis of prospectively acquired data.