A cat with suspected laryngeal metastasis with mucosal irregularity resultingfrom apocrine/salivary gland adenocarcinoma in the head

[摘要] A 16-year-old castrated male mongrel cat presented with swelling under the left pinna anda 3 -month history of voice change. Laryngeal endoscopy revealed circumferential oedemaaround the arytenoid cartilages and hypersecretion of saliva. Histopathologicalexamination of the mass around the left ear canal was considered the primary lesion thatoriginated from cutaneous apocrine adenocarcinoma or parotid gland adenocarcinoma, and itmetastasized to the larynx, lung and medial retropharyngeal lymph nodes. This reportprovides new insights into feline laryngeal diseases which could result in laryngealmetastasis with slight mucosal irregularity alone and without obvious radiographicabnormalities. Therefore, histopathological examination should be performed when a catpresents clinical signs such as stridor, dysphonia or voice change without anymass-forming laryngeal lesion.

[学科分类] 兽医学

[关键词] adenocarcinoma;cat;endoscopy;laryngeal disease