Difference between revisions of "Category:Intestine - Mechanical Obstruction"

Revision as of 12:46, 31 May 2010

Acute of chronic mechanical obstruction of the intestine can occur in all species.
- Acute obstruction usually involves the upper or middle small intestine
- Chronic obstruction typically occurs in the distal small intestine or large intestine.
Three main categories of causes of obstruciton:
- Intraluminal
  - E.g. foreign bodies, food impaction.
- Intramural
  - E.g. neoplasia
- Extrinsic (Obstruction of the intestine due to external factors such as tumours, abscesses, and fibrous adhesions is a common occurrence. )
  - E.g. adhesions, neoplasia and prostate enlargement.

This category has only the following subcategory.

The following 10 pages are in this category, out of 10 total.

@@ Line 28: / Line 28: @@
 =====[[Prostatic Enlargement]]=====
-=====Neoplasia=====
+=====[[Neoplasia, Intestinal]]=====
-* Neoplasi in structures adjacent to the intestines can spread and cause external compression.
+[[Category:Obstruction, Intestinal]]
-* Pancreatic tumours in particular can extend and impinge on the [[Duodenum - Anatomy & Physiology|duodenum]].
-* Pedicles of tumours such as lipomas in horses can become wound in loops of intestine leading to obstruction and possible strangulation.
-[[Image:Pedunc_lipoma_closeup.jpg|thumb|right|150px|Closeup of a pedunculated lipoma (Courtesy of Elspeth Milne)]]
-* '''Clinical'''
-** Occasional [[Control of Feeding - Anatomy & Physiology#The Vomit Reflex|vomiting]] and ntermittent [[Intestine Diarrhoea - Pathology|diarrhoea]] over several weeks.
-* '''Pathogenesis'''
-** Seen occasionally in cat (rarer in dog)
-** Usually towards end of intestines
-*** E.g. at the ileocaecocolic valve.
-** Gut proximal to tumour  becomes thickened due to hypertrophy of smooth muscle as a result of trying  to force ingesta past progessively narrowing lumen.
-** Produces "hose pipe intestine".
-** Seen with carcinoma, lymphoma, leiomyoma and other tumours.[[Category:Obstruction, Intestinal]]