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Oesphageal Varices |
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Oesophageal varices are an important cause of
vomiting blood.
At the lower end of the oesophagus the submucosal venous plexus drains into both
the systemic venous system and the portal venous system. When the pressure in
the
portal venous system is high, e.g. as a result of severe diffuse long-standing
liver disease, the oesophageal submucosal venous channels become enormously
dilated
to form oesophageal varices, which may protrude slightly into the lumen.
Rupture
of the varices, or ulceration of the overlying mucosa, can produce torrential
haemorrhage into the oesophagus and stomach, often precipitating vomiting of
blood
(haematemesis).
The most common cause of oesophageal varices is portal hypertension associated
with cirrhosis of the liver. |
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We give here simplified and accurate information about the disease
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