Difference between revisions of "Splenic Neoplasia"
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| − | # | + | *these are important surgically since splenomegaly can be diagnoses clinically by palpation or X-ray and some tumours are surgically curable |
| + | |||
| + | ====Hyperplastic Nodules or Benign Lymphoma==== | ||
| + | *very common incidental findings in older dogs | ||
| + | *should not be mistakenly identified as pathognomic lesions | ||
| + | *consist of nodules of hyperplastic white and red pulp | ||
| + | :- usually 1-2 cms in size, but occasionally may be larger | ||
| + | :- spherical | ||
| + | :- protrude hemispherically from the surface as yellow and red mottled nodules | ||
| + | *infrequently, may rupture and give rise to haemorrhage | ||
| + | ====[[Haemangioma]]==== | ||
| + | |||
| + | ====Haemangiosarcoma==== | ||
| + | *highly malignant tumour of dogs | ||
| + | *distinguished from the superficially similar haemangioma by the presence of much more formed, solid tumour tissue | ||
| + | *accurate prognosis demands histological examination | ||
| + | *secondaries are common locally in the [[Peritoneal cavity - Anatomy & Physiology#Omentum|omentum]] and in the [[Liver - Anatomy & Physiology|liver]] | ||
| + | :- course is usually short, often only a month or two | ||
| + | :- metastases may occur in almost every organ | ||
| + | ====Haematopoietic Neoplasms==== | ||
| + | =====lymphosarcoma===== | ||
| + | * splenomegaly occurs in multicentric lymphosarcoma | ||
| + | *splenic enlargement may be marked if any form of lymphosarcoma is in leukaemic phase | ||
| + | =====myeloid (granulocytic) leukaemia===== | ||
| + | *rare | ||
| + | *all species | ||
| + | *extreme form with spleen approaching liver size | ||
| + | =====systemic mastocytosis===== | ||
| + | *cat | ||
| + | *extreme form with spleen approaching liver size | ||
| + | |||
| + | [[Category:Spleen - Pathology]] | ||
| + | [[Category:To Do - Blood]] | ||
Revision as of 13:41, 11 August 2010
- these are important surgically since splenomegaly can be diagnoses clinically by palpation or X-ray and some tumours are surgically curable
Hyperplastic Nodules or Benign Lymphoma
- very common incidental findings in older dogs
- should not be mistakenly identified as pathognomic lesions
- consist of nodules of hyperplastic white and red pulp
- - usually 1-2 cms in size, but occasionally may be larger
- - spherical
- - protrude hemispherically from the surface as yellow and red mottled nodules
- infrequently, may rupture and give rise to haemorrhage
Haemangioma
Haemangiosarcoma
- highly malignant tumour of dogs
- distinguished from the superficially similar haemangioma by the presence of much more formed, solid tumour tissue
- accurate prognosis demands histological examination
- secondaries are common locally in the omentum and in the liver
- - course is usually short, often only a month or two
- - metastases may occur in almost every organ
Haematopoietic Neoplasms
lymphosarcoma
- splenomegaly occurs in multicentric lymphosarcoma
- splenic enlargement may be marked if any form of lymphosarcoma is in leukaemic phase
myeloid (granulocytic) leukaemia
- rare
- all species
- extreme form with spleen approaching liver size
systemic mastocytosis
- cat
- extreme form with spleen approaching liver size