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| − | ==Other Lymphadenopathy== | + | == [[Lymphadenopathy - |
| − | ===Lymph node pigmentation===
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| − | *Lungs
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| − | :- anthracosis
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| − | ::- carbon derived from soot finds its way to the local nodes in macrophages
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| − | *Skin
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| − | :- dermatopathic lymphadenopathy or melanic reticulosis
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| − | ::- in pigmented animals, especially black dogs
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| − | ::- chronic inflammatory skin conditions lead to melanin deposition in hyperplastic nodules
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| − | :- also occurs in nodes draining skin melanomas where the pigment may be the result of skin ulceration or secondary tumour deposit
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| − | ::- these two should not be confused since the prognosis is very different following surgery
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| − | ===Emphysema===
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| − | *interstitial emphysema
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| − | :- common in cases of dyspnoea
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| − | :- more commonly affects bovine lung
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| − | ::- due to well developed pulmonary lobulation and hence much loose interstitial lung tissue
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| − | *collection of gas bubbles in bronchial and mediastinal lymph nodes
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| − | :- gas travels to these nodes after gaining entry to the many lymphatic vessels present in the interstitial tissue
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| − |
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| − | ===Neoplasia===
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| − | * Primary tumours
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| − | ** Lymphosarcoma (lymphoma)
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| − | :- of lymphoid cells with lymph node enlargement
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| − | :- smooth, pale hemogenous but may have areas of necrosis
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| − | :- may cause [[Parathyroid Glands - Pathology#Pseudo-Hyperparathyroidism|pseudo-hyperparathyroidism]]
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| − | * Secondary tumours
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| − | :- nodes often involved in the spread of tumours by extension or metastasis
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| − | :- usually carcinomas
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| − | [[Category:Lymph Node Responses in Disease]]
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| | ==[[Haemal Lymph Nodes]]== | | ==[[Haemal Lymph Nodes]]== |
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| | [[Category:Inflammation]] | | [[Category:Inflammation]] |
| | + | Other]]== |