Carcinomatous meningitis: Symptoms, causes, and outlook - Medical News Today
Carcinomatous meningitis (CM) is a rare complication that can occur during late stage cancer. It develops when cancer cells break away from the original tumor and invade the meninges, which are the protective membranes that surround the brain and spinal cord. CM is rare, accounting for about 4–15% of all solid tumor cancer cases. Although many types of cancer can cause this complication, cancers such as breast cancer, lung cancer, and melanoma are more likely to result in CM. In this article, we discuss CM in detail, including its symptoms, causes, and outlook. CM is a complication of cancer. It occurs when cancer cells break away from the main tumor and invade the thin membranes that cover the brain and spinal cord, or meninges. The name of the complication comes from two different medical conditions: carcinoma and meningitis. Carcinoma is a type of cancer that begins in the epithelial cells. These cells line a person's skin, organs, and internal passageways. According to the Nat...