Prognostic value of histological grading of hydatidiform moles

Histological study of materials from 282 patients with hydratidiform moles showed no correlation between the degree of trophoblastic proliferation and the subsequent development of choriocarcinoma. A significant number of invasive moles, however, showed a marked degree of trophoblastic proliferation. All patients with molar pregnancy should continue to have adequate and mandatory clinical follow-up.