1. 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，也称为息肉样纤维瘤或纤维瘤样息肉。
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为恶性，卵巢恶性纤维性肿瘤非常少见。

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