Category:Lymph Nodes

Category:Lymph Node Responses in Disease

Role of the Lymph Node in Inflammation

Back to Inflammation - Pathology

Diseases Involving Reactive Node Diseases

== the [[Lymphocyte

Other Lymphadenopathy

Lymph node pigmentation

• Lungs

- anthracosis

- carbon derived from soot finds its way to the local nodes in macrophages

• Skin

- dermatopathic lymphadenopathy or melanic reticulosis

- in pigmented animals, especially black dogs

- chronic inflammatory skin conditions lead to melanin deposition in hyperplastic nodules

- also occurs in nodes draining skin melanomas where the pigment may be the result of skin ulceration or secondary tumour deposit

- these two should not be confused since the prognosis is very different following surgery

Emphysema

• interstitial emphysema

- common in cases of dyspnoea

- more commonly affects bovine lung

- due to well developed pulmonary lobulation and hence much loose interstitial lung tissue

• collection of gas bubbles in bronchial and mediastinal lymph nodes

- gas travels to these nodes after gaining entry to the many lymphatic vessels present in the interstitial tissue

Neoplasia

• Primary tumours
  • Lymphosarcoma (lymphoma)

- of lymphoid cells with lymph node enlargement

- smooth, pale hemogenous but may have areas of necrosis

- may cause pseudo-hyperparathyroidism

• Secondary tumours

- nodes often involved in the spread of tumours by extension or metastasis

- usually carcinomas

Haemal Lymph Nodes

Parasitising Diseases]]==