Bilateral virilizing sclerosing stromal tumours of the ovary in a pregnant woman with Gorlin's syndrome: implications for pathogenesis of ovarian stromal neoplasms.

A woman with Gorlin's syndrome who had become pregnant following clomiphene therapy presented in early pregnancy with bilateral ovarian sclerosing stromal tumours which were associated with profound virilization. Pre- and post-operative hormone profiles indicated androgen production by the tumours. Ovarian sclerosing stromal tumours have not previously been reported as occurring bilaterally or in association with Gorlin's syndrome. We discuss the questions raised by this unusual case regarding the pathogenesis of ovarian stromal neoplasms.