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