Nasopharyngeal fibroma is a very rare, benign, soft tissue tumor.This disease almost always occurs in young men.It is also called polypoid fibroma or fibromatous polyp.

摘要鼻咽纤维瘤是非常罕见的良性结缔组织肿瘤，最常发生在年青的男性，样纤维瘤或纤维瘤样。

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.

如果它是纤维瘤，你应该象纤维卵泡膜瘤一样，需要认真地观察核分裂和细胞异型性以判断它是否恶性，卵巢恶性纤维性肿瘤非常少见。