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.
Cholangiocarcinoma is a cancer that arises from the cells within the bile ducts; both inside and outside the liver. When the tumors arise within the liver, the tumors can be small or large.The terms cholangiocarcinoma and bile duct cancer are often used interchangeably.This form of cancer is slightly more common in males than females and usually affects patients who are between 50-70 years of age.Intrahepatic Cholangiocarcinoma.In contrast, when the tumors arise along the bile ducts that enter the liver, the tumors tend to be smaller.his form of cancer is slightly more common in males than females and usually affects patients who are between 50-70 years of age. Intrahepatic Cholangiocarcinoma. In contrast, when the tumors arise along the bile ducts that enter the liver, the tumors tend to be smaller.