atypia

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

有很少的分裂象，无及维组织增生。

2.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.

如果维瘤，你应该象维卵泡膜瘤一，需要认真地观察核分裂和细胞以判断否为恶，卵巢恶维肿瘤非常少见。