Mandibular squamous cell carcinoma with reactive bone proliferation in two cats

Abstract

Two cats with mandibular swellings were histologically diagnosed as squamous cell carcinoma. No soft tissue lesion was observed in the oral mucosa, and mandibular radiographs showed considerable bone proliferation. These features differed from that of common feline oral squamous cell carcinoma in which ulceration of the oral mucosa and severe bone resorption were observed. In either case, hemimandibulectomy was performed, and there was no recurrence and metastasis for over one year. From these results, better clinical outcome may be expected in cats with oral squamous cell carcinoma with localized bone proliferation.