atypia

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

有很少象，无异型及纤组织增生。

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.

如果它是纤瘤，你应该象纤卵泡膜瘤一，需要认真地观察核和细胞异型以判断它是否为恶，卵巢恶纤瘤非常少见。