From Dog

Lymphadenopathy refers to any disease which causes a change in the size or palpable consistency of a lymph node.

A single lymph node may be involved (localized or peripheral lymphadenopathy) or a number of lymph nodes may be involved (multicentric lymphadenopathy).

Additionally, peripheral lymphadenopathy refers to enlarged lymph nodes in peripheral sites such as pre-scapular, retropharyngeal, submandibular and popliteal lymph nodes.

Numerous diseases are capable of causing lymphadenopathy, including:

- Francisella tularensis (Tularemia)
- Nocardia spp
- Mycobacterium spp
- Actinomyces spp
- Toxoplasma spp
- Blastomyces dermatitidis
- Cryptococcus spp
- Coccidioides immitis
- Histoplasma spp
- hypereosinophilic syndrome