trapped egg syndrome
Definition A popular term for a defect in ovulation characterised by normal endocrine features of presumptive ovulation, without actual release of an egg: biphasic basal body temperature curves, secretory endometrium, and laboratory evidence of progesterone production by elevated urinary pregnanediol or plasma progesterone levels
Risk factors Oral contraceptives, endometriosis, polycystic ovaries.
Clinical findings Patients are often asymptomatic.
Diagnosis Laparoscopy performed after apparent ovulation often reveal absence of a corpus haemorrhagicum.
Management Hormonal induction with hCG or in vitro fertilisation with the retrieval of oocytes
Synonym Luteinised unruptured follicle