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=Abdominal Haemangiosarcoma=
==Description==
A highly malignant tumour of dogs. The origin of '''abdominal haemangiosarcoma''' is often from the spleen. Neoplastic cells are implanted into the abdomen, causing widespread peritoneal seepage of blood or metastasise to the liver and lungs. This is a highly malignant disease.
==Signalment==
==Signalment==
Often found in older German Shepherd Dogs and Golden Retrievers
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==Diagnosis==
==Diagnosis==
===Clinical Signs===
===Clinical Signs===
Animals often present Collapsed; due to rupture of the mass, leading to a haemoabdomen.
Otherwise Lethargy, weakness, pallor and anorexia may preceed a major bleed.
===Laboratory Tests===
===Laboratory Tests===
====Haematology====
====Haematology====
Anaemia; may be regenerative if due to blood loss, or microangiopathic due to the passage of red blood cells through the microvascular network of the tumour
====Biochemistry====
====Biochemistry====
====Ultrasonography====
====Ultrasonography====
This is sensitive in indentifying liver and splenic masses.
This is sensitive in indentifying liver and splenic masses.
==Pathology==
===Cholangiocellular - bile duct===
*can be primary in the [[Liver - Anatomy & Physiology|liver]]
*other predilection sites
**[[Spleen - Anatomy & Physiology|spleen]]
**right auricle of the heart
*prevalent in large breeds
==From Spleen Pathology==
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]]
The course of disease is usually short, often only a month or two and metastases may occur in almost every organ.
==References==
==References==
Ettinger, S.J. and Feldman, E. C. (2000) '''Textbook of Veterinary Internal Medicine Diseases of the Dog and Cat Volume 2''' (Fifth Edition) ''W.B. Saunders Company''.
Hall, E.J, Simpson, J.W. and Williams, D.A. (2005) '''BSAVA Manual of Canine and Feline Gastroenterology (2nd Edition)''' ''BSAVA''
Nelson, R.W. and Couto, C.G. (2009) '''Small Animal Internal Medicine (Fourth Edition)''' ''Mosby Elsevier''.