Squamous cell carcinoma (SCC) is one of the most common malignant neoplasms in horses, but lingual SCC has seldom been reported. On separate occasions, a 12-year-old American Quarter Horse mare and an 18-year-old American Saddlebred stallion were presented to the Auburn University Large Animal Teaching Hospital for evaluation of weight loss, dysphagia, and ptyalism. Evaluation of each horse included physical examination, skull radiographs, oral examination, complete blood count and serum biochemistry profile, endoscopic evaluation of the mouth, and biopsy of tissue from a lesion found on the tongue. Histopathologic assessment of tissue harvested from the lingual lesions led to a diagnosis of SCC in each case. The diagnosis prompted euthanasia for one horse, but radiation therapy appeared to delay the progression of the lesion in the other horse.
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| http://dx.doi.org/10.1016/j.jevs.2019.05.022 | DOI Listing |
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