The prognostic significance of grading in borderline mucinous tumors of the ovary

Fifty-three stage I borderline mucinous tumors of the ovary were placed into four histologic grades according to a simple system of grading based on degree of cell layering, nuclear characteristics, and mitotic count. Three patients died of recurrence and spread of their tumors. All three patients had grade 4 tumors, suggesting that there may be some prognostic value in grading borderline mucinous ovarian tumors.