Primary intraosseous carcinoma of the mandible: A clinicoradiographic view.

Primary intraosseous carcinoma (PIOC) or Primary intraosseous squamous cell carcinoma (PIOSCC) is a rare carcinoma, which arises within the jaws without connection to the oral mucosa and presumably develops from a remnant of odontogenic epithelium. It is a rare case which arises by direct transformation of odontogenic epithelial rests in the jawbone, including the epithelial rests found within the periodontal ligament and alveolar bone, remnants of the dental lamina, and the reduced enamel epithelium surrounding an unerupted/impacted tooth. Herein, we report a case of a 76-year-old male patient who came with a complaint of deviation of his jaws to one side which revealed resorption of total part of the condyle along with the condylar head and coronoid process on radiographic evaluation, which was histopathologically diagnosed as primary intraosseous carcinoma which is a very rare clinical entity.