atypia

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

有很少的，无异型及组织增生。

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.

如果它是瘤，你应该卵泡膜瘤一，需要认真地观察核和细胞异型以判断它是否为恶，卵巢恶肿瘤非常少见。