Buccal lymph node
Lymphonodus buccalis
Definition
The buccal lymph node has been described in various species: it is not always present in dogs, guinea pigs, primates and camels, but appear to be consistent in humans and rabbits.
In dogs, the buccal lymph node is always located dorsal to the zygomatic muscle and rostrally to the masseter muscle, in the region where the superior labial vein joins the facial vein. It should not be confused with the accessory parotid gland or the ventral buccal salivary gland.
References
Casteleyn CR, van der Steen M, Declercq J, Simoens P. The buccal lymph node (lymphonodus buccalis) in dogs: occurrence, anatomical location, histological characteristics and clinical implications. Vet J. 2008 Mar;175(3):379-83. doi: 10.1016/j.tvjl.2007.01.019. Epub 2007 Mar 21. PMID: 17369060.