Small intestine - Revision history

Michael: +ileitis

2022-11-18T16:07:58Z

+ileitis

← Older revision		Revision as of 16:07, 18 November 2022
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	Image: Mild ileitis -- high mag.jpg \| Ileitis - high mag. (WC)		Image: Mild ileitis -- high mag.jpg \| Ileitis - high mag. (WC)
	</gallery>		</gallery>

			===Sign out===
			<pre>
			Terminal Ileum, Biopsy:
			- Small bowel with moderate active inflammation, marked villous blunting, basal plasmacytosis
			and prominent eosinophils, see comment.
			- NEGATIVE for granulomas.
			- NEGATIVE for dysplasia.

			Comment:
			The inflammation is nonspecific; it could be due to infection, inflammatory bowel disease (especially Crohn's disease), ischemia, or therapy/drugs. Clinical correlation is required.
			</pre>

	==Small bowel obstruction==		==Small bowel obstruction==

Michael: /* Roux-en-Y gastric bypass */ split out

2018-05-02T23:33:15Z

Roux-en-Y gastric bypass: split out

← Older revision		Revision as of 23:33, 2 May 2018
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	====Roux-en-Y gastric bypass====		====Roux-en-Y gastric bypass====
	{{Main\|Obese}}		{{Main\|Obese}}
	~~<pre>~~		{{Main\|Roux-en-Y gastric bypass}}
	~~Small Bowel, Excision During Gastric Bypass:~~
	~~- Small bowel wall within normal limits.~~
	~~</pre>~~

	~~<pre>~~
	~~Small Bowel, Excision during~~ Roux-en-Y ~~Gastric Bypass:~~
	~~- Small bowel wall within normal limits.~~
	~~</pre>~~

	====Block letters====		====Block letters====

Michael at 15:43, 5 March 2017

2017-03-05T15:43:59Z

← Older revision		Revision as of 15:43, 5 March 2017
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	===IHC===		===IHC===
	*CD20 and CD3 - mixed population of lymphocytes.		*[[CD20]] and CD3 - mixed population of lymphocytes.
	*[[CD23]] - follicular dendritic cells.		*[[CD23]] - follicular dendritic cells.
	*Cyclin D1 -ve.		*Cyclin D1 -ve.

Michael: /* Microscopic */

2016-11-17T15:02:10Z

Microscopic

← Older revision		Revision as of 15:02, 17 November 2016
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	**[[Tuberculosis]].		**[[Tuberculosis]].
	*Benign ileum - may have focal intra-epithelial lymphocytes associated with lamina propria lymphoid nodules.		*Benign ileum - may have focal intra-epithelial lymphocytes associated with lamina propria lymphoid nodules.
			*[[NSAID enteropathy]].<ref name=pmid20532706>{{Cite journal \| last1 = Dilauro \| first1 = S. \| last2 = Crum-Cianflone \| first2 = NF. \| title = Ileitis: when it is not Crohn's disease. \| journal = Curr Gastroenterol Rep \| volume = 12 \| issue = 4 \| pages = 249-58 \| month = Aug \| year = 2010 \| doi = 10.1007/s11894-010-0112-5 \| PMID = 20532706 }}</ref>

	====Images====		====Images====

Michael: /* Roux-en-Y gastric bypass */

2016-09-09T15:26:47Z

Roux-en-Y gastric bypass

← Older revision		Revision as of 15:26, 9 September 2016
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	====Roux-en-Y gastric bypass====		====Roux-en-Y gastric bypass====
	{{Main\|Obese}}		{{Main\|Obese}}
			<pre>
			Small Bowel, Excision During Gastric Bypass:
			- Small bowel wall within normal limits.
			</pre>

	<pre>		<pre>
	Small Bowel, Excision during Roux-en-Y Gastric Bypass:		Small Bowel, Excision during Roux-en-Y Gastric Bypass:

Michael: splitout

2016-04-01T19:15:30Z

splitout

← Older revision		Revision as of 19:15, 1 April 2016
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	==Ischemic enteritis==		==Ischemic enteritis==
	~~===General===~~		{{Main\|Ischemic enteritis}}
	*Typically elderly and due to [[atherosclerosis]].
	*Rare.
	*High mortality.<ref name=pmid18616124>{{~~Cite journal~~ \| ~~last1 = Nakase \| first1 = H. \| title = [~~Ischemic enteritis~~]. \| journal = Nihon Rinsho \| volume = 66 \| issue = 7 \| pages = 1330-4 \| month = Jul \| year = 2008 \| doi = \| PMID = 18616124~~ }}~~</ref>~~
	*May occur together with ischemia of the colon, i.e. ''[[ischemic colitis]]'', in which case it is known as ''ischemic enterocolitis''.

	~~Etiologies:~~
	*[[Atherosclerosis]].
	*[[Vasculitis]].
	*Embolism.
	*Thrombosis.

	~~===Microscopic===~~
	~~Features:~~
	*See ''[[ischemic colitis]]''.

	~~DDx:~~
	*Shock.
	**Infection.
	**Cardiogenic shock.
	*[[Crohn's disease]].
	*[[Radiation changes]].
	*Drugs/toxins.

	=Weird stuff=		=Weird stuff=

Michael: /* Ischemic enteritis */

2016-04-01T19:12:02Z

Ischemic enteritis

← Older revision		Revision as of 19:12, 1 April 2016
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	DDx:		DDx:
	*Infection.		*Shock.
			**Infection.
			**Cardiogenic shock.
	*[[Crohn's disease]].		*[[Crohn's disease]].
	*[[Radiation changes]].		*[[Radiation changes]].

Michael: /* Meckel diverticulum */

2016-03-22T20:38:07Z

Meckel diverticulum

← Older revision		Revision as of 20:38, 22 March 2016
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	==Meckel diverticulum==		==Meckel diverticulum==
	~~===General===~~		{{Main\|Meckel diverticulum}}
	*Most common congenital anomaly of the gastrointestinal tract.<ref name=pmid15026601>{{~~Cite journal \| last1 = Levy \| first1 = AD. \| last2 = Hobbs~~ \| ~~first2 = CM. \| title = From the archives of the AFIP.~~ Meckel diverticulum~~: radiologic features with pathologic Correlation. \| journal = Radiographics \| volume = 24 \| issue = 2 \| pages = 565-87 \| month = \| year = \| doi = 10.1148/rg.242035187 \| PMID = 15026601~~ }}~~</ref>~~
	**Remnant of the ''omphalomesenteric duct'' - a connection of the yolk sac and midgut.

	~~The rule of 2s:~~
	*2 feet from the terminal ileum
	*2% of the population
	*2% symptomatic.
	*2 inches long.
	*2 year old.
	*2 types of epithelium - gastric and pancreatic.

	~~Main clinical DDx of a symptomatic Meckel diverticulum:~~
	*[[Appendicitis]].

	~~===Gross===~~
	*Antimesenteric attachement, i.e. a ''Meckel's diverticulum'' hangs off the side opposite of the mesentery.

	~~Image:~~
	*[http://commons.wikimedia.org/wiki/File:Meckel%27s_Diverticulum_AFIP.jpg Meckel diverticulum - (AFIP/WC)].

	~~===Microscopic===~~
	~~Features:<ref name=pmid15026601/>~~
	*Small bowel mucosa.
	*+/-Gastric mucosa:
	**Foveolar epithelium: champagne flute-like columnar epithelium.
	**Oxyntic mucosa: parietal cells (pink) and chief cells (purple).
	*+/-Pancreatic epithelium:
	**Pancreatic acini.

	~~Images:~~
	*[http://radiographics.rsna.org/content/24/2/565/F12.expansion.html Gastric foveolar epithelium in a MD (radiographics.rsna.org)].
	*[http://radiographics.rsna.org/content/24/2/565/F15.expansion.html Gastric glands in a MD (radiographics.rsna.org)].
	*[http://radiographics.rsna.org/content/24/2/565.long Pancreatic glands in a MD (radiographics.rsna.org)].

	==Ischemic enteritis==		==Ischemic enteritis==

Michael: /* Microscopic */

2016-01-16T04:40:24Z

Microscopic

← Older revision		Revision as of 04:40, 16 January 2016
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	*Infectious ileitis.		*Infectious ileitis.
	**[[Tuberculosis]].		**[[Tuberculosis]].
			*Benign ileum - may have focal intra-epithelial lymphocytes associated with lamina propria lymphoid nodules.

	====Images====		====Images====

Michael: /* Ileitis */

2016-01-16T04:39:07Z

Ileitis

← Older revision		Revision as of 04:39, 16 January 2016
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	==Ileitis==		==Ileitis==
	:''Active ileitis'' and ''acute ileitis'' redirect here.		:''Active ileitis'' and ''acute ileitis'' redirect here.
			:This deals with nonspecific ileitis.
			===General===
			*Common.

	===Microscopic===		===Microscopic===
	Features:		Features:
	*Intraepithelial [[neutrophil]]s.		*Intraepithelial [[neutrophil]]s.

			DDx:
			*[[Crohn's disease]].
			*Infectious ileitis.
			**[[Tuberculosis]].

	====Images====		====Images====