The temporal lobes of the brain are located just above each ear. These lobes are associated with auditory perception, visual object recognition, sensory input storage, social behavior, emotion and memory. The lobes are divided into the dominant left lobe and non-dominant right lobe.

Cysts are small pouches of fluid that can form on organs anywhere in the body. Brain cysts can be caused by developmental abnormalities and may be present at birth, causing them to be classified as primary brain cysts.

The National Cancer Institute describes a brain tumor as a mass of tissue that grows within the brain. Such tumors can either be malignant or benign. A malignant tumor contains cancer cells that may spread throughout the brain and spinal cord.

A brain cyst is a small sac that is filled with air, liquid or another type of material. Cysts are different than tumors, explains MayoClinic.com. A cyst is small, noncancerous sac. A tumor, in contrast, is caused by the abnormal growth of cancerous cells, forming a lump full of tissue.

Brain tumors are abnormal masses in the area of the brain. They may be small or large, grow slow or fast, and be cancerous or benign. Tumors can be found in many different areas of the brain; symptoms are dependent on the location of the tumor and whether it is affecting vital brain structures.

The show must go on for 52-year-old Gord Downie, who suffers from glioblastoma, an aggressive and incurable cancer.

A neurological condition that results in brain tissue loss, brain atrophy can occur in small parts of the brain or affect both hemispheres of the brain, according to the National Institute of Neurological Disorders and Stroke.

The devastating diagnosis of a brain tumor can terrify the most courageous individuals. But knowing the symptoms can alter the course of events with an early diagnosis. The Mayo Clinic's symptom list includes headaches, vision disturbances, seizures, weakness, mobility changes, and speech impairment.

The functions of the eye are influenced by impulses from several nerves in the skull called cranial nerves. The optic nerve translates visual information from the retina into nerve impulses that the brain can interpret.

A brain tumor is an abnormal growth of cells within the skull. There are many different types of brain tumors that can affect children and teenagers, and they are among the most common types of childhood cancers.

Brain swelling, also known as brain edema and cerebral edema, is a serious consequence of a brain injury. When the brain swells, it affects the patient's cognitive and behavioral function. In addition, brain swelling puts the patient at risk for severe brain damage and death.