Pathological
Pathological anastomoses result from trauma or disease and may involve veins, arteries, or intestines. These are usually referred to as fistulas. In the cases of veins or arteries, traumatic fistulas usually occur between artery and vein. Traumatic intestinal fistulas usually occur between two loops of intestine (enetero-enteric fistula) or intestine and skin (enterocutaneous fistula). Portacaval anastomosis, by contrast, is a veno-venous anastomosis between a vein of the portal circulation and a vein of the systemic circulation, which allows blood to bypass the liver in patients with portal hypertension, often resulting in hemorrhoids, esophageal varices, or caput medusae.
Circulatory anastomoses between monochorionic twins may result in twin-to-twin transfusion syndrome.
Read more about this topic: Circulatory Anastomosis
Famous quotes containing the word pathological:
“Analysis does not set out to make pathological reactions impossible, but to give the patient’s ego freedom to decide one way or another.”
—Sigmund Freud (1856–1939)
“A pathological business, writing, don’t you think? Just look what a writer actually does: all that unnatural tense squatting and hunching, all those rituals: pathological!”
—Hans Magnus Enzensberger (b. 1929)