Tumors of the Jaws

摘要: Tumors of the jaws are epithelial, osseous, or dental in origin. The epithelial tumors, like those skin, epidermal basal-cell type, arising from neighboring mucous membranes their appendages and invading by direct extension. malignant osseous tumors (including osteogenic Ewing9s sarcoma) resemble long bones. benign bone show features peculiar to this region. osteomas ossifying fibromas a mode ossification characteristic membranous bone. giant-cell may be central peripheral. peripheral (epulides) related origin eruption permanent teeth. usually cystic character contain elements. In histogenesis they enamel organ which is derived oral ectoderm. classification incidence these as recorded Surgical Pathological Laboratory at Johns Hopkins, follows: