It is a kind of benign, noncancerous brain tumor.

它是一种良性、非癌性脑肿瘤。

Another benign tumor is the giant-cell tumor of the bone - quite a name!

另一个良性骨肿瘤是骨巨细胞瘤。

Because of that, benign tumors and growths called hamartomas form throughout the body.

正因如此，体内开始形成良性肿瘤和错构瘤。

Other benign tumors are osteoblastomas and osteoid osteomas, both of which arise from osteoblasts.

其他良性肿瘤包括成骨细胞瘤、骨样骨瘤，两者均成骨细胞。

If it is not able to invade other tissues, it's referred to as a benign tumor.

如果其不能侵入其他组织，那么就称之为良性肿瘤。

Let's start with the most common benign tumor, which is an osteochondroma and commonly affects males under 25 years.

让我们从最常见良性肿瘤开始，骨软骨瘤，多见25岁以下男性。

Compared with benign tumor cells, a distinguishing feature of malignant tumor cells is that they have slightly less organized nuclei.

与良性肿瘤相比，恶性肿瘤特征是其拥有稍微不规则胞核。

Best In 1987, Lauren was diagnosed with a benign brain tumor.

最佳 1987 年，劳伦被诊断出患有良性脑瘤。

It's most commonly caused by a benign tumor of the pituitary gland.

它最常见是由垂体良性肿瘤引。

A doctor he met at a reading in El Paso, Texas, volunteered to remove that benign tumor he later fed to a turtle.

他在德克萨斯州埃尔帕索一场读书会上还遇到了一位医生主动请求切除他后来喂给了海龟那个良性肿瘤。

A third class of tumors are called borderline tumors because they have features that are intermediate between the other benign and malignant tumors.

第三类肿瘤是中性肿瘤，因为其特点介其他良性和恶性肿瘤之间。

One cause is hyperprolactinemia, or excessive prolactin secretion by pituitary lactotroph cells, which is frequently seen with a benign pituitary tumor called a prolactinoma.

一个原因是高泌乳素血症，垂体泌乳素细胞分泌过多泌乳素，大多并发良性垂体肿瘤，称为泌乳素瘤。

Compared with benign tumor cells, malignant tumor cells have key features like not having a clearly defined border or like a slightly less organized nuclei.

和良性肿瘤相比，恶性肿瘤有一些典型特征，比如边界不清且结构紊乱细胞核。

The leading cause of that is a pituitary adenoma, which is a benign tumor of the pituitary gland- and this specific condition is called Cushing disease.

垂体腺瘤是导致这一失常主要原因，这是一种位垂体良性肿瘤，在这种特定情况下被称为库欣病。

A different cause is a hyper functioning thyroid adenoma where the follicular cells start growing uncontrollably, forming a benign tumor that makes excess thyroid hormones.

另一个原因是功能亢进甲状腺腺瘤，滤泡细胞生长开始不受控制，形成一个产生过量甲状腺激素良性肿瘤。

Another common cause of endogenous Cushing syndrome is tumors of the adrenal glands that make excess cortisol - like adrenal adenomas, which are benign tumors, and adrenal carcinomas, which are malignant tumors.

另一种常见内性库欣综合征原因是肾上腺肿瘤导致过多皮质醇分泌，比如肾上腺腺瘤，一种良性肿瘤，还有肾上腺癌，一种恶性肿瘤。

The exact reason for the development of this sort of benign tumor isn't known - but unlike a malignant tumor - the cells don't invade neighboring tissues or spread to other parts of the body.

产生这种良性肿瘤具体原因还不清楚，但是和恶性肿瘤不同是，这些细胞不会转移到周围组织或扩散到身体其他部位。

Rhabdomyo refers to striated muscle tissue, or cardiac muscle tissue in this case, so rhabdomyomas are benign tumors of the heart that usually affect the ventricles, and are best considered hamartomas rather than a true neoplasm.

横纹肌指是条状肌肉组织，这里就指心肌；横纹肌瘤是良性肿瘤，且通常累及心室，最好被认为错构瘤而非肿瘤。

There are two general types of tumors: benign tumors and malignant tumors. A benign tumor is composed of cells that will not invade other unrelated tissues or organs of the body, although it may continue to grow in size abnormally.

良性肿瘤和恶性肿瘤。尽管良性肿瘤可能会继续异常地体积增大，但他不会侵袭身体其他无关组织或器官细胞组成。