Low serum oestriol and Cushing's syndrome during pregnancy.

Previously in world literature there have been reports of 40 pregnancies in women with untreated Cushing's syndrome. The perinatal mortality in these series has been 12.9%. This paper reports on a case in which low serum oestriol excretion was the first abnormal laboratory value in a patient with only a few signs of Cushing's syndrome habitus and adrenal adenoma.