Comparison between spontaneous ovarian hyperstimulation syndrome and hyperreactio luteinalis.
We present here two patients with bilateral ovarian enlargement during the first trimester of pregnancy. We clinically diagnosed one case as spontaneous ovarian hyperstimulation syndrome and the other case as hyperreactio luteinalis. It may be difficult to discriminate severe hyperreactio luteinalis in the first trimester from spontaneous ovarian hyperstimulation.