The neurofibromas are multiple benign neoplasms of the peripheral nervous system, arising from mesodermally-derived schwann cells . 神經(jīng)纖維瘤是外圍神經(jīng)系統(tǒng)的多發(fā)良性腫瘤,由中胚葉的雪氏細(xì)胞發(fā)生。
As a general rule , benign neoplasms do not give rise to malignant neoplasms 一般地說,良性腫瘤不會(huì)發(fā)展成惡性腫瘤。
As a general rule , benign neoplasms do not give rise to malignant neoplasms 圖示是胸部皮膚痣,這種良性瘤通常不會(huì)惡化。
This schwannoma was resected from a nerve . note the circumscribed nature of this benign neoplasm 圖示是從神經(jīng)組織切除的神經(jīng)鞘瘤,它具有良性瘤的局限性特點(diǎn)。
As a general rule , benign neoplasms do not give rise to malignant neoplasms 最多見良性瘤是一種良性皮膚痣(色素痣) ,大多數(shù)人都有幾個(gè),這種贅生物一般不會(huì)惡化。
Here is the lipoma at high magnification . this is a good example of how a benign neoplasm mimics the tissue of origin 高倍鏡下,從這個(gè)脂肪瘤很容易觀察到良性瘤和起源組織的相似性。
Here is the lipoma at high magnification . this is a good example of how a benign neoplasm mimics the tissue of origin 在低倍鏡下,小腸脂肪瘤和黏膜界限很清,這個(gè)瘤分化良好,只表現(xiàn)為局限性腫塊,很難和正常脂肪組織區(qū)分開。
However , the overall difference between them is not great , so this benign neoplasm mimics the normal tissue quite w ell and this , therfore , is well - differentiated 但總的區(qū)別不是很大,因此良性腫瘤跟正常組織很相似,即分化好。
However , the overall difference between them is not great , so this benign neoplasm mimics the normal tissue quite well and this , therefore , well - differentiated 然而它們之間的不同不是很大,因此這種良性腫瘤與正常的組織相似性較大,分化較好。
Benign neoplasms can be multiple , as is shown in this uterus with leiomyomas of varying size , but all benign and well - circumscribed firm white masses 良性腫瘤可以是多樣的,如圖所示子宮平滑肌瘤樣大小不等,但幾乎所有的良性腫瘤都為邊界清楚,堅(jiān)實(shí)的白色腫物。