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Radiology of Liver Circulation (Paperback, Softcover reprint of the original 1st ed. 1985)
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Radiology of Liver Circulation (Paperback, Softcover reprint of the original 1st ed. 1985)
Series: Series in Radiology, 11
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The liver blood flow disorders are usually described under the term
'portal hypertension', which is a well known syndrome since it has
been widely studied for years from a clinical, radiological and
therapeutic point of view. In fact, portal hypertension is only the
result of an obstacle to the portal flow, the clinical
manifestations of which often occur at a late stage of the disease:
bleeding esophageal varices, splenomegaly, ascites. In addition, it
is well known that there is not always a precise relationship
between the degree of the obstruction, i.e. the decrease of the
portal inflow and the level of the portal hypertension. A severe
obstruction to the portal flow may therefore sometimes remain
clinically inconspicuous for a long time. For this reason
improvement of our knowledge of portal hypertension mainly relies
on angiographic investigations. Thus, splenoportography permits the
discovery of prehepatic obstructions whereas hepa tic venography
permitted the recognition of two different types of intrahepatic
obstruction according to the pre-sinusoidal or post -sinusoidal
site of the obstacle. More recently, arterial hepatic changes could
be evidenced through arteriography. However, these angiographic
investigations have not yet allowed for all the problems about
portal hypertension to be clearly identified.
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