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Recognition and Description of Lesions (view source)
Revision as of 14:55, 14 February 2011
, 14:55, 14 February 2011Text replace - "[[Haemorrhage - Pathology" to "[[Haemorrhage"
[[Image:consolidation and haemorrhage lung.jpg|thumb|right|150px|Consolidation and haemorrhage in the lung (Courtesy of BioMed Archive)]]
[[Image:consolidation and haemorrhage lung.jpg|thumb|right|150px|Consolidation and haemorrhage in the lung (Courtesy of BioMed Archive)]]
* This colouration is commonly seen with an increase in the amount of blood- may indicate
* This colouration is commonly seen with an increase in the amount of blood- may indicate
** [[Haemorrhage - Pathology|Haemorrhage]]
** [[Haemorrhage|Haemorrhage]]
*** Significant [[Haemorrhage - Pathology|haemorrhage]] is usually very dark, since the haemoglobin is depleted of oxygen.
*** Significant [[Haemorrhage|haemorrhage]] is usually very dark, since the haemoglobin is depleted of oxygen.
** Congestion.
** Congestion.
* This colour change is most obvious in light coloured tissues due to the contrast in colour.
* This colour change is most obvious in light coloured tissues due to the contrast in colour.
** More difficult to see in e.g. spleen.
** More difficult to see in e.g. spleen.
* If seen in a nodular lesion, the lesion may be
* If seen in a nodular lesion, the lesion may be
** A [[Haemorrhage - Pathology#Haematoma|haematoma]].
** A [[Haemorrhage#Haematoma|haematoma]].
** A vascular lesion.
** A vascular lesion.
** An abscess with [[Haemorrhage - Pathology|haemorrhage]].
** An abscess with [[Haemorrhage|haemorrhage]].
====Black or Brown/ Black====
====Black or Brown/ Black====
**** Known as pseudomelanosis
**** Known as pseudomelanosis
** [[Pigmentation and Calcification - Pathology#Haemosiderin|Haemosiderosis]] (brown to golden brown).
** [[Pigmentation and Calcification - Pathology#Haemosiderin|Haemosiderosis]] (brown to golden brown).
*** Implies old/ chronic congestion or [[Haemorrhage - Pathology|haemorrhage]].
*** Implies old/ chronic congestion or [[Haemorrhage|haemorrhage]].
====Green====
====Green====
** '''Blood'''
** '''Blood'''
*** Dark red.
*** Dark red.
*** Recent [[Haemorrhage - Pathology|haemorrhage]] into the body cavities is thick, and often contains clots.
*** Recent [[Haemorrhage|haemorrhage]] into the body cavities is thick, and often contains clots.
*** Serosanguinous fluid (blood tinged oedema) is often seen at necropsy.
*** Serosanguinous fluid (blood tinged oedema) is often seen at necropsy.
**** Is much thinner than [[Haemorrhage - Pathology|haemorrhage]], and does not contain clots.
**** Is much thinner than [[Haemorrhage|haemorrhage]], and does not contain clots.
* Fluid can also accumulate post-mortem.
* Fluid can also accumulate post-mortem.
**** [[Purulent Inflammation|Abscess]], [[Granulomatous Inflammation|granuloma]]
**** [[Purulent Inflammation|Abscess]], [[Granulomatous Inflammation|granuloma]]
*** A [[Neoplasia - Pathology|neoplasm]]
*** A [[Neoplasia - Pathology|neoplasm]]
*** A [[Haemorrhage - Pathology#Haematoma|haematoma]]
*** A [[Haemorrhage#Haematoma|haematoma]]
*** A cyst.
*** A cyst.
** Considering the categories for description of the lesion should allow a ‘most-likely’ identity to be reached, or at least a short list of possibilities to be made.
** Considering the categories for description of the lesion should allow a ‘most-likely’ identity to be reached, or at least a short list of possibilities to be made.