Abstract
Two dogs with gingival lesions were treated with simultaneous tooth extraction and lesion removal. The lesions were diagnosed as squamous cell carcinoma, and due to early recurrence, the dogs were brought to the Azabu University Veterinary Teaching Hospital. Computer tomography(CT)findings confirmed nasal cavity invasion in both cases. In Case 1, radiotherapy was performed, and in Case 2, resection, intraoperative radiotherapy, and postoperative radiotherapy were performed. Subsequently, both cases received carboplatin and piroxicam treatment. No sign of recurrence has been seen for two years in Case 1 and one year in Case 2. Because tooth extraction can facilitate the spread of gingival lesions to the nasal cavity, it is important to perform a histological analysis prior to tooth extraction.
