hallenging Concepts in Obstetrics and Gynaecology/I is a case-based guide to difficult scenarios faced in the fields. Each case is set off by an 'Expert Commentary' written by an expert, giving the reader both a solid base of knowledge and a nuanced view of current challenges.

• 1: A 'classic case of heavy menstrual bleeding?


• 2: Severe endometriosis in a young woman with unexpected end-organ failure


• 3: Pregnancy of unknown location: a diagnostic management dilemma


• 4: PGD in oligozoospermia


• 5: Recurrent miscarriage: Is conservative management the best we can offer?


• 6: Lethal congenital abnormalities: the importance of a multidisciplinary approach


• 7: 7. Monochorionic diamniotic twin pregnancy complicated by twinâtwin transfusion syndrome


• 8: 8. 'Rescue' cerclage after bulging membranes at 22 weeks: delaying the inevitable?


• 9: Early onset fetal growth restriction


• 10: Dilemmas of preterm birth


• 11: Pulmonary hypertension in pregnancy


• 12: The challenges and controversies of pregnancy and diabetes


• 13: HIV in pregnancy: The dilemmas of management


• 14: SLE in pregnancy: Lupus nephritis or pre-eclampsia; a diagnostic challenge


• 15: Management of a pregnant woman with morbid obesity


• 16: Early onset pre-eclampsia: balancing maternal and neonatal morbidity


• 17: Vaginal birth after caesarean section


• 18: Maternal pyrexia: Challenges in optimal perinatal management


• 19: Forewarned is forearmed in massive obstetric haemorrhage


• 20: Premature ovarian failure: Not the same as the 'normal' menopause


• 21: Treating urinary incontinence: an evolving challenge for us all


• 22: Post menopausal bleeding


• 23: Recurrent ovarian cancer


• 24: Cervical cancer

Natasha Hezelgrave is a Specialist Registrar in Obstetrics and Gynaecology in the London Deanery Training Programme, and an NIHR Doctoral Research Fellow in the Women's Health Academic Centre, King's College London. Her main research interests are preterm birth, pre-eclampsia, and global health.
Danielle Abbott is currently a GP trainee in the London Deanery Training Programme, and a Research Fellow in Obstetrics working on an MD on the prediction of preterm birth in the Academic Women's Health Centre, Kings College London.
Andrew Shennan is Professor of Obstetrics at Kingâs College London, based at St. Thomasâ Hospital. He leads clinical research at the Womenâs Academic Health Centre, and is Deputy Director of Research and Development for Guys and St. Thomas NHS Trust. He is the National Chair of the NIHR Reproductive Health and Childbirth Specialty Group in the UK. He specializes in clinical trials in antenatal and intrapartum care. His research interests include interventions to predict and prevent preterm birth, pre-eclampsia, obstetric anaesthesia, global health and the use of blood pressure monitoring.