OBJECTIVES To present 8 new cases of primary intraosseous carcinoma of the jaws and to review the literature for an analysis of treatment modalities and patient outcomes. DATA SOURCES A MEDLINE search from 1970 to 1999. The articles chosen and the study of the references of every one that produced additional articles provided database information for 28 patients. Eight new patients from our i...

The case of a 58-year-old man with a large primary intraosseous carcinoma (PIOC) of the mandible is presented. The tumour is rare, and the prognosis is usually poor. There are no specific histological characteristics of PIOC. Staining for basement membrane laminin could be a valuable aid in the differential diagnosis between PIOC and tumours of ameloblastoma origin.

Primary intraosseous mucoepidermoid carcinoma (PIOC) is an infrequent malignancy of the head and neck that exhibits diverse biological behavior. The rareness of the location for a salivary gland tumor and the clinical and radiographic manifestations, suggestive of an odontogenic lesion often pose a diagnostic challenge. We hereby report such a unique case of central mucoepidermoid carcinoma tha...

Primary Intraosseous Carcinoma, Not Otherwise Specified (PIOC, NOS) is an extremely rare neoplasm defined as squamous cell carcinoma in the mandible, presumably from residue of odontogenic epithelium. The diagnosis often challenging, and prognosis poor. treatment choice surgical excision but usually declined for cosmetic reasons. A 41-year-old Melanesian woman with a mass her right jaw since tw...

Odontogenic carcinomas of the maxilla are classified as malignant ameloblastoma, ameloblastic carcinoma, or primary intraosseous carcinoma. The term ameloblastic carcinoma is used to describe those ameloblastomas in which there is histological evidence of malignancy in the primary, recurrent, or metastatic tumour. The maxilla is an unusual site for ameloblastoma. This report is of a patient wit...