Axillary lymphadenectomy in dogs: A description of surgical technique.

The axillary lymph center drains a large area; however, axillary lymphadenectomy is rarely reported in series detailing lymph node extirpation in dogs. No surgical technique has yet been described for axillary and superficial axillary lymphadenectomy. This study describes a technique for excision of nodes in the axillary lymph center of the dog. Two male neutered and two male intact cadavers weighing between 6.3 and 36.1 kg were used. With cadavers in dorsal recumbency and the shoulder extended, an incision was made in the caudal axillary region. Blunt dissection was used to separate the pectoralis profundus and latissimus dorsi muscles and loose connective tissue was dissected until the axillary lymph node was identified caudal to the brachial vein. The axillary lymphatic trunk was followed caudad from the axillary lymph node to identify the accessory axillary lymph node, deep to the lateral border of the pectoralis profundus muscle, for subsequent extirpation. Axillary lymph nodes were successfully removed in all axillae, and accessory axillary lymph nodes were located in 6/7 axillae and could not be visualized within the axillary lymphatic trunk in the remaining axilla. The described surgical technique allowed consistent identification of the axillary lymph node and the lymphatic trunk associated with the accessory axillary lymph node. This technique description provides a guide for surgeons to facilitate axillary and accessory axillary lymphadenectomy in the dog. While anatomic variation must be considered, the use of the axillary lymphatic trunk as a landmark may simplify identification of the small and inconsistent accessory axillary lymph node.

Zygomatic sialocele secondary to infarction treated with sialoadenectomy in a dog.

Zygomatic salivary gland disease is not commonly reported in dogs and there is a paucity of literature reporting salivary gland disease secondary to infarction in dogs. A 9-year-old German wirehaired pointer presented with left eye exophthalmos, 3rd eyelid elevation, negative retropulsion, and pain upon opening of the mouth. Computed tomography revealed a mass extending from the left zygomatic salivary gland, consistent with a sialocele. A left-sided zygomatic sialoadenectomy was performed successfully. Histopathologic diagnosis concluded zygomatic salivary gland infarction. The dog had no signs of recurrence 20 mo after surgery. Key clinical message: To the authors' knowledge, this is the first case report with long-term outcome of a zygomatic sialocele secondary to salivary gland infarction in a dog treated by zygomatic sialoadenectomy via zygomatic osteotomy.

Sialocèle zygomatique secondaire à un infarctus traité par sialoadénectomie chez un chien. Une atteinte des glandes salivaires zygomatiques n'est pas fréquemment rapportée chez le chien et il existe peu de littérature rapportant une maladie des glandes salivaires secondaire à un infarctus chez le chien. Un pointeur allemand à poil dur de 9 ans présentait une exophtalmie de l'oeil gauche, une élévation de la troisième paupière, une rétropulsion négative et une douleur à l'ouverture de la bouche. La tomodensitométrie a révélé une masse s'étendant à partir de la glande salivaire zygomatique gauche, compatible avec une sialocèle. Une sialoadénectomie zygomatique gauche a été réalisée avec succès. Le diagnostic histopathologique a permis de conclure à un infarctus des glandes salivaires zygomatiques. Le chien n'avait aucun signe de récidive 20 mois après la chirurgie.Message clinique clé :À la connaissance des auteurs, il s'agit du premier rapport de cas avec évolution à long terme d'une sialocèle zygomatique secondaire à un infarctus des glandes salivaires chez un chien traité par sialoadénectomie zygomatique via une ostéotomie zygomatique.(Traduit par Dr Serge Messier).