meninges. plural of meninx; the three membranes covering the brain and spinal cord: the dura mater, arachnoid, and pia mater. adj., adj meninÂ´geal.Meninges of the central nervous system.eninx. Etymology: Gk, meninx, membrane. the three membranes enclosing the brain and the spinal cord, comprising the dura mater, the pia mater, and the arachnoid membrane. The pia mater and the arachnoid can become inflamed by bacterial meningitis, causing serious complications that may be life-threatening.
The exact cause of cholangiocarcinoma is unknown, and most cases occur sporadically, but there are several well-defined risk factors. The most common of these is primary sclerosing cholangitis (PSC). The true incidence of cholangiocarcinoma in the setting of PSC is reported as 8%-40%, depending on the type of study.
Bile ducts connect your liver to your gallbladder and to your small intestine. Bile duct cancer, also known as cholangiocarcinoma, is a rare form of cancer that occurs mostly in people older than age 50, though it can occur at any age. Intrahepatic cholangiocarcinoma occurs in the parts of the bile ducts within the liver and is sometimes classified as a type of liver cancer.