atypia

There is minimal mitotic activity, no atypia and no desmoplasia.

有很裂象，无异型及纤维组织增生。

If it is a fibromatous tumor, you need to check mitosis and cytologic atypia carefully to see if it is malignant, like fibrothecoma.Malignant fibrous tumor is very few in ovary.

如果它是纤维，你应该象纤维卵泡膜一，需要认真地观察核裂和细胞异型以判断它是否为恶，卵巢恶纤维非常见。