Difference between revisions of "Category:Intestine - Mechanical Obstruction"
Jump to navigation
Jump to search
Line 7: | Line 7: | ||
** Intramural | ** Intramural | ||
*** E.g. neoplasia | *** E.g. neoplasia | ||
− | ** Extrinsic | + | ** 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. | + | *** E.g. [[Adhesions|adhesions]], neoplasia and prostate enlargement. |
====Intraluminal Obstruction==== | ====Intraluminal Obstruction==== | ||
Line 21: | Line 21: | ||
====Extrinsic Obstruction==== | ====Extrinsic Obstruction==== | ||
− | * | + | * |
− | =====Inflammatory Adhesions===== | + | =====Inflammatory [[Adhesions]]===== |
− | |||
− | |||
− | |||
− | |||
− | |||
=====Prostatic Enlargement===== | =====Prostatic Enlargement===== |
Revision as of 12:43, 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.
- Intraluminal
Intraluminal Obstruction
Foreign Bodies, Intestinal
Extrinsic Obstruction
Inflammatory Adhesions
Prostatic Enlargement
- In the dog
- Can lead to compression of the rectum
Neoplasia
- Neoplasi in structures adjacent to the intestines can spread and cause external compression.
- Pancreatic tumours in particular can extend and impinge on the duodenum.
- Pedicles of tumours such as lipomas in horses can become wound in loops of intestine leading to obstruction and possible strangulation.
- Clinical
- 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.
Pages in category "Intestine - Mechanical Obstruction"
The following 10 pages are in this category, out of 10 total.