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Created page with '==Introduction== * Tumours may develop from any of the components of the intestinal wall. ** May be of either a benign or malignant variation. * Tumours have a wide range of eff…'
==Introduction==
* Tumours may develop from any of the components of the intestinal wall.
** May be of either a benign or malignant variation.
* Tumours have a wide range of effects on intestinal funtion.
*# Many malignant tumours cause intestinal obstruction at their point of origin.
*#* E.g. intestinal adenocarcinomas, solitary lymphomas.
*#* Onset is often gradual (unlike most foreign bodies)
*#* Benign tumours can also cause obstruction, but this is most likely if they
*#** Protrude into the lumen
*#** Are located at a compressible site, e.g. within the pelvis, at the duodenal flexure.
*# Tumours that diffusely infiltrate the mucosa cause diahorrea due to malabsorption and development of a protein losing enteropathy.
*#* E.g. diffuse alimentary lymphoma.
*# Benign or malignant tumours can result in mucosal erosion or ulceration.
*#* Blood is lost, causing haemorrhagic anaemia.
*#** Prolonged bleeding can cause iron deficiency anaemia.
*#* Extensive tumour necrosis may occur due to rapid growth or secondary infection.
*#** This can cause gradual or sudden perforation and peritonitis.
[[Category:Intestines_-_Proliferative_Pathology]]
* Tumours may develop from any of the components of the intestinal wall.
** May be of either a benign or malignant variation.
* Tumours have a wide range of effects on intestinal funtion.
*# Many malignant tumours cause intestinal obstruction at their point of origin.
*#* E.g. intestinal adenocarcinomas, solitary lymphomas.
*#* Onset is often gradual (unlike most foreign bodies)
*#* Benign tumours can also cause obstruction, but this is most likely if they
*#** Protrude into the lumen
*#** Are located at a compressible site, e.g. within the pelvis, at the duodenal flexure.
*# Tumours that diffusely infiltrate the mucosa cause diahorrea due to malabsorption and development of a protein losing enteropathy.
*#* E.g. diffuse alimentary lymphoma.
*# Benign or malignant tumours can result in mucosal erosion or ulceration.
*#* Blood is lost, causing haemorrhagic anaemia.
*#** Prolonged bleeding can cause iron deficiency anaemia.
*#* Extensive tumour necrosis may occur due to rapid growth or secondary infection.
*#** This can cause gradual or sudden perforation and peritonitis.
[[Category:Intestines_-_Proliferative_Pathology]]