Oligodendrogliomas

Oligodendrogliomas are tumors that develop from a certain type of cell called oligodendroglial progenitor cells. These are the precursors to cells called oligodendrocytes, which wrap around nerve cells in the brain and spinal cord to form insulation. At Columbia...

Olfactory Groove and Sphenoid Wing Meningiomas

The term meningioma is a name for a tumor of the meninges, which are membranes that line the skull and enclose the brain. Meningiomas may arise from any location where meninges exist (eg, nasal cavity, paranasal sinuses, middle ear, mediastinum) and are generally...

Mixed Gliomas

Mixed gliomas are tumors made up of more than one type of glial cell—support cells in the brain and spinal cord. At Columbia University Medical Center/NewYork-Presbyterian Hospital, we specialize in diagnosing and surgically treating mixed gliomas. For more...

Metastatic Brain Tumors

A tumor, or neoplasm, is a mass of abnormal cells that grows at an uncontrolled pace, crowding out and destroying normal tissue. Metastatic brain tumors are malignant growths that are formed by cancer cells originating in a different region or organ in the body....

Meningiomas

Meningiomas are tumors that grow in the meninges, the thin protective coverings around the brain and spinal cord. Meningiomas usually grow slowly. They are most often benign tumors; that is, they are not cancerous and will not spread. However, as they increase in size...