Severe ovarian hyperstimulation syndrome with minimal ovarian enlargement: a case report.

Severe ovarian hyperstimulation syndrome is an uncommon but potentially lethal complication of treatment with in vitro fertilization and other assisted reproductive technologies. We describe such a case which was atypical in that ascites and hydrothorax occurred despite the absence of ovarian enlargement. Whilst the pathophysiology of the syndrome remains unclear, the clinician must remain alert to the possibility of such an unusual presentation of this syndrome.