Osteosarcoma is a malignant primary neoplasm of osteoblasts in the periosteum and according to Dahlin (1978) the most frequent primary malignant tumor if multiple myeloma is excluded. Two cases of teenage female patients with osteogenic sarcomas of the mandible are presented. None of the predisposing factors were present but the general symptoms were all present. The only factor they shared associated with osteogenic sarcomas was the fact that both of them were taller than normal individuals for their specific age group. Osteosarcoma is the most common type of bone cancer in children and is most common in teenagers who are experiencing their adolescent growth spurt. Boys are twice as likely to have osteosarcoma as girls. Although osteosarcoma is most often seen in teenage boys, there is evidence that teens that are taller than average are at special risk. Most osteosarcomas arise from non-inherited errors in the DNA of growing bone cells. Because the error occurs randomly and unpredictably during intense bone growth, there is currently no effective way to prevent this type of cancer. The purpose of this presentation is to present the value of pantomography in the early diagnosis of osteogenic sarcomas and to demonstrate the importance of MRI and CT scans for the evaluation and classification of these lesions. The use of advanced imaging (MRI and CT) enabled the clinicians to make a preliminary diagnosis of osteogenic sarcoma.
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