Necrosis - Pathology - Revision history

Bara at 16:17, 21 February 2011

2011-02-21T16:17:54Z

2011-02-14T15:02:17Z

2011-02-14T12:52:37Z

2010-09-20T19:30:57Z

2010-08-27T18:14:09Z

2010-08-04T11:18:51Z

2010-07-01T15:21:07Z

2010-07-01T10:37:08Z

Gas Gangrene

2010-06-12T12:47:35Z

Text replace - 'Eosinophils - WikiBlood' to 'Eosinophils'

2010-06-12T12:39:45Z

Text replace - 'Macrophages - WikiBlood' to 'Macrophages'

@@ Line 341: / Line 341: @@
 *** Commonly seen following a septicaemic condition when an embolus blocks the blood supply.
 **** When seen in calves, the possibility of [[Salmonellosis|salmonellosis]] must be kept in mind.
-*** Other causes are frostbite and [[Skin Environmental - Pathology#Ergot poisoning|ergot poisoning]].
+*** Other causes are frostbite and [[Ergot Poisoning|ergot poisoning]].
 ==Calcification==

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 ===Loss of Blood Supply===
-* Necrosis due to interuption of blood supply to a portion of tissue is known as '''ischaemic necrosis''', or [[Ischaemia and Infarction - Pathology#Infarction|'''infarction''']].
+* Necrosis due to interuption of blood supply to a portion of tissue is known as '''ischaemic necrosis''', or [[Infarction|'''infarction''']].
-* The effects of [[Ischaemia and Infarction - Pathology#Ischaemia|ischaemia]] on a tissue vary according to:
+* The effects of [[Ischaemia|ischaemia]] on a tissue vary according to:
 ** The tissue affected.
 *** Some tissues are more susceptible than others.
@@ Line 26: / Line 26: @@
-* Tissue [[Ischaemia and Infarction - Pathology#Ischaemia|ischamia]] can be brought about in three ways:
+* Tissue [[Ischaemia|ischamia]] can be brought about in three ways:
 ** Compression of the blood vessel.
 ** Narrowing of the lumen.

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 ==Introduction==
 * '''Necrosis''' means the death of cells within the living body.
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 ** The cell breaks up into fragments that are engulfed by neighbouring cells or local macrophages.
 *** Their remnants can be seen in the neighbouring cells’ cytoplasm.

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 {{review}}
 {{toplink
-|linkpage =General Pathology
+|linkpage =:Category:WikiPath
 |linktext =General Pathology
 |maplink = General Pathology (Content Map)

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 |pagetype =Pathology
 }}
 ==Introduction==
 * '''Necrosis''' means the death of cells within the living body.

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 ** Also contains the remnants of the necrotic tissue cells.
 * Although in favourable cases the [[Neutrophils|neutrophils]] may eventually kill the organisms, in most cases the organisms persist, producing more pus.
-** Produces an expanding sphere of pus known as an [[Acute Inflammation - Pathology#Purulent|'''abscess''']].
+** Produces an expanding sphere of pus known as an [[Purulent Inflammation|'''abscess''']].
 *** If the abscess is near to the skin and pressure becomes sufficient after build up, it will burst.
 **** Pus is discharged, hopefully along with the organisms responsible.

@@ Line 61: / Line 61: @@
 ====Blocking of the Lumen====
-* Important causes are [[Thrombosis - Pathology#Introduction|thrombi]] and [[Thrombosis - Pathology#Embolism|emboli]].
+* Important causes are [[Thrombosis#Introduction|thrombi]] and [[Embolism|emboli]].
 * Renal vessels are commonly affected.

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 * The zone of inflammation between the dead putrefying tissue and living tissue is indistinct.
-=====Gas Gangrene=====
+=====[[Gas Gangrene]]=====
 ====Dry Gangrene====

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 * The colour is usually chalk-white.
 ** There may be a yellowish-green tinge if the inciting cause is a parasite.
-*** Due to attraction of a large number of [[Eosinophils - WikiBlood|eosinophils]].
+*** Due to attraction of a large number of [[Eosinophils|eosinophils]].
 ===Histological Appearance===

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 ** E.g. tuberculosis in the ox, pig and sheep.
 ** Necrotic tissue is not derived  from the organ in which it occurs.
-*** Formed from [[Macrophages - WikiBlood|Macrophages]] sent into the tissue in large numbers to engulf the causative organism.
+*** Formed from [[Macrophages|Macrophages]] sent into the tissue in large numbers to engulf the causative organism.
-** The organism has defences against the enzymes of the [[Macrophages - WikiBlood|Macrophages]].
+** The organism has defences against the enzymes of the [[Macrophages|Macrophages]].
 *** Is able to grow and multiply within these macrophages and eventually causes their death.
 ** In some granulomas, the macrophages will combine together and form giant cells.