Difference between revisions of "Splenic Neoplasia"

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(Created page with "*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 L...")
 
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:- protrude hemispherically from the surface as yellow and red mottled nodules
 
:- protrude hemispherically from the surface as yellow and red mottled nodules
 
*infrequently, may rupture and give rise to haemorrhage
 
*infrequently, may rupture and give rise to haemorrhage
====Haemangioma====
+
====[[Haemangioma]]====
*benign tumour of dogs
+
 
*may grow to considerable size
 
:- the size of the lesion giving rise to clinical signs is compounded by haemorrhage from and into the tumour
 
:- thus, a large mass of apple size may be found protruding from the spleen and adherent to the omentum
 
*on section, it is largely blood clot
 
*responds well to surgery
 
:- therefore it must be distinguished from haemangiosarcoma
 
 
====Haemangiosarcoma====
 
====Haemangiosarcoma====
 
*highly malignant tumour of dogs
 
*highly malignant tumour of dogs

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