MLA Format: References. 1  The references page is placed at the end of your paper. 2  It should start with a new page, have a centered Works Cited title. 3  Double space all citations.  Create a hanging indent, to do so, indent second and subsequent lines of citations by 0.5 inches.
Primary brain tumors are much less common than are secondary brain tumors, in which cancer begins elsewhere and spreads to the brain. Many different types of primary brain tumors exist. Each gets its name from the type of cells involved. Examples include: 1  Gliomas.2  These tumors begin in the brain or spinal cord and include astrocytomas, ependymoma, glioblastomas, oligoastrocytomas and oligodendrogliomas. 3  Meningiomas.any different types of primary brain tumors exist. Each gets its name from the type of cells involved. Examples include: 1  Gliomas. 2  These tumors begin in the brain or spinal cord and include astrocytomas, ependymoma, glioblastomas, oligoastrocytomas and oligodendrogliomas. 3  Meningiomas.
Gliomas are the most commonly diagnosed of both benign and malignant primary brain tumors, accounting for approximately 45-50% of all primary brain tumors. The most common gliomas are: astrocytomas, ependymomas, oligodendrogliomas and tumors with mixtures of two or more of these cell types. Grades I and II astrocytomas account for 25-30% of all gliomas. The most frequently diagnosed types of astrocytoma are pilocytic astrocytoma, grade II astrocytoma, anaplastic astrocytoma and glioblastoma multiforme. Astrocytomas. Pilocytic Astrocytoma Pilocytic astrocytomas, which are grade I tumors, are considered benign because they do not invade the surrounding normal brain tissue.