Tumors are one of the most misunderstood diagnoses or conditions. While no one wants to be told they have one, many people don't realize that a tumor is nothing more than a clump of abnormal cells ...

Arachnoid cysts are benign, cerebrospinal fluid-filled sacs that typically arise from developmental anomalies in the arachnoid membrane. Although often discovered incidentally, these lesions can ...

Brain tumors can be cancerous or benign. Benign tumors do not spread to other body parts, but they can cause serious problems if they press on healthy brain tissue. Some can become cancerous. Brain ...