Ok, so, now let's focus on supratentorial pediatric tumors.

好，现在让我们来认识下儿童脑幕上肿瘤。

A rare supratentorial pediatric tumor is a pinealoma, which forms in the region of the pineal gland.

还有一种罕见的儿童脑幕上肿瘤：松果体瘤，在松果体中形成。

So let's start with tumor types that are generally infratentorial tumors, because they make up the majority of pediatric brain tumors.

我们从通常属于脑幕下肿瘤的类型开始介绍，因为它们是儿童脑肿瘤的主要类型。

Now, while medulloblastoma may be the most common malignant tumor, the most common primary pediatric tumor is a type of astrocytoma called a juvenile pilocytic astrocytoma.

尽管髓母细胞瘤可能是最常见的恶性肿瘤，最常见的儿童原发脑肿瘤是一种星形细胞瘤，称为青少年毛细胞型星形细胞瘤。