Category: P

A group of veins which have capillaries at both ends and do not go to the heart. A vein or group of veins that terminates at both ends in a capillary bed. The best known is the hepatic portal system, which consists of the portal vein and its tributaries. Blood is drained from the spleen,…

An infection of the portal vein in the liver, giving abscesses.  

High pressure in the portal vein, caused by cirrhosis of the liver or a clot in the vein and causing internal bleeding. Increased pressure in the portal vein resulting from an obstruction of blood flow through the liver. increase in pressure within the veins of the portal system caused by obstruction in the (hepatic) blood…

Referring to a porta, especially the portal system or the portal vein.  

An opening in the liver through which the hepatic artery, hepatic duct and portal vein pass. Anatomic landmark on the liver where the portal vein, hepatic artery, hepatic ducts, and hepatic lymphatic vessels enter at the point of the transverse fissure that separates the caudate and quadrate lobes. The fissure of the liver where the…

A type of catheter put in place under a person’s skin to make it easier to have chemotherapy, transfusions and blood tests. It is accessed by the use of a special needle and flushed regularly with sterile saline.  

Referring to something which can be carried. Movable or transferable from one place to another, e.g., a portable oxygen supply.  

An opening which allows blood vessels to pass into an organ. Opening or entry, especially one through which blood vessels pass into an organ (e.g., porta hepatis, the opening through which major blood vessels enter and leave the liver). The aperture in an organ through which its associated vessels pass. Such an opening occurs in…

The presence of excess porphyrins in the urine, a sign of porphyria or of metal poisoning. The presence in the urine of breakdown products of the red blood pigment hemoglobin (porphyrins), sometimes causing discoloration. Excretion of an increased amount of porphyrin in the urine. The excretion of porphyrins in the urine.  

A condition in which there are cysts in the cerebral cortex, as a result of unusual development. An abnormal communication between the lateral ventricle and the surface of the brain. This is usually a consequence of brain injury or cerebrovascular disease; uncommonly it may be a developmental defect, when it would most likely affect both…