Changes

In cats following the inroduction of widespread vaccination against [[Feline Leukaemia Virus|FeLV]] testing and [[vaccination]] the most common type of lymphoma affecting cats is alimentary when previously it had been mediastinal and multicentric forms.

In cats following the inroduction of widespread vaccination against [[Feline Leukaemia Virus|FeLV]] testing and [[vaccination]] the most common type of lymphoma affecting cats is alimentary when previously it had been mediastinal and multicentric forms.

Only 10% of lymphoma cases in cats is  now associated with FeLV.

Only 10% of lymphoma cases in cats are now associated with FeLV.

==Signalment==

==Signalment==

For other types of lymphoma affecting dogs the clinical signs will demonstrate the anatomical site affected.

For other types of lymphoma affecting dogs the clinical signs will demonstrate the anatomical site affected.

'''Mediastinal''' forms will present with decreased heart sounds, dyspnoea and polyuria and polydypsia due to paraneoplastic hypercalcaemia.

'''Mediastinal''' forms will present with decreased [[Heart - Anatomy & Physiology|heart]] sounds, [[Dyspnoea|dyspnoea]] and polyuria and polydypsia due to paraneoplastic hypercalcaemia.

Dogs with mediastinal lymphoma can also have pitting oedema of the head and neck due to compression of the cranial vena cava.

Dogs with mediastinal lymphoma can also have pitting [[Oedema - Pathology|oedema]] of the head and neck due to compression of the cranial vena cava.

'''Alimentary''' forms will present with vomiting, diarrhoea, anorexia and thickened loops on intestine on abdominal palpation.

'''Alimentary''' forms will present with vomiting, diarrhoea, anorexia and thickened loops on intestine on abdominal palpation.