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→Introduction
::Alimentary - Gut and associated lymphoid tissue affected.
::Alimentary - Gut and associated lymphoid tissue affected.
::Multicentric - Widespread involvement of lymph nodes.
::Multicentric - Widespread involvement of lymph nodes.
::Cutaneous lymphoma - Usually presents as generalised skin disease, but is a malignant transformation of T cells with a propensity for pithelial sites.
::Cutaneous lymphoma - Usually presents as generalised skin disease, but is a malignant transformation of T cells with a propensity for epithelial sites.
:'''Type of lymphocyte''' - [[T cells|T-cell]], [[B cells|B-cel]] or [[Natural Killer cells|NK-cell]]
:'''Type of lymphocyte''' - [[T cells|T-cell]], [[B cells|B-cel]] or [[Natural Killer cells|NK-cell]]
:'''Time scale''' - Acute or Chronic
:'''Time scale''' - Acute or Chronic
Only 10% of lymphoma cases in cats are now associated with FeLV, whereas it used to be 70%.
Only 10% of lymphoma cases in cats are now associated with FeLV, whereas it used to be 70%.
The alimentary form affects the mesenteric lymph nodes, intestine, [[Liver - Anatomy & Physiology|liver]], spleen , and potentially the kidney. The thymic form presents as a thymic mass, also in the mediastinal lymph nodes. The pleural lymph nodes and the liver may potentially be affected. Multicentric form is found in the peripheral and deep lymph nodes, liver and spleen. The kidney may sometimes be affected. There is also a renal form affecting kidneys and other abdominal organs and leukaemic form affecting the bone marrow alone, this form is rare.
The alimentary form arises from the mesenteric lymph nodes or intestine, [[Liver - Anatomy & Physiology|liver]]. The thymic form presents as a thymic mass. The bronchial, cranial mediastinal and pre-sternal lymph nodes may potentially be affected. The multicentric form is rare in the cat. This form originates in the peripheral lymph nodes, later involving liver, spleen and other organs, eventually bone marrow in some cases. Cats can also develop extra-nodal lymphoma in several sites including the CNS and kidneys. A leukaemic form affecting the bone marrow alone is rare.
===Horse===
===Horse===