1990
DOI: 10.1017/s0022215100114501
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Mandibular involvement in oral cancer

Abstract: It is difficult to predict the tumour invasion into the mandible by oral cancer pre-operatively, and consequently the decision to preserve or sacrifice the mandible is largely individualistic. The present study of 44 cases analyses the reliability of pre-operative parameters to assess mandibular involvement. Clinical, radiological and scintigraphic features have been compared with the detailed histology of the bone. This study confirms the usefulness of superior marginal resections in lesions which are close t… Show more

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Cited by 55 publications
(51 citation statements)
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“…Compared to the study Bahadur S et al, there is a 22% to 29% incidence of carcinoma invasion of mandibular bone on initial presentation [9]. Weisman and Kimmelman found one third of all oral tumors that invade bone failed to show any clinical indication of mandibular involvement [10].…”
Section: Resultsmentioning
confidence: 88%
“…Compared to the study Bahadur S et al, there is a 22% to 29% incidence of carcinoma invasion of mandibular bone on initial presentation [9]. Weisman and Kimmelman found one third of all oral tumors that invade bone failed to show any clinical indication of mandibular involvement [10].…”
Section: Resultsmentioning
confidence: 88%
“…According to Doweck et al 12 (2002), only 14.1% of the patients with tumors larger than 19.6 cc survive, while 41.5% survive when the tumors are smaller than 19.6 cc 12 . In our study, a protocol was established to measure the volume of the tumors before and after treatment in the analysis of bone structures, improving imag- false positive and false negative rates when determining bone invasion 2,5,17 , because 4 mm and 5 mm thick axial slices are used. Most authors suggest that thin slices are needed to detect more bone details 5,10,17 .…”
Section: Discussionmentioning
confidence: 99%
“…The 3D segmentation protocol demonstrated high imaging resolution, with high specificity and sensitivity to determine the lesion components. Also, the artifacts in CT scan can limit the observation of local invasion of malignant tumors, due to dental fillings (basically amalgam) and bone shape 2,7,10,17 . For that reason, we believe that using 3D-CT images by volume rendering technique can improve the visualization and thus clarify the anatomical patterns of tumors.…”
Section: Discussionmentioning
confidence: 99%
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“…A incidência desta neoplasia na mandíbula é de 12% a 56% de acordo com vários estudos 2,3,14,22,25,26,27,26 . Os carcinomas epidermóides são mais freqüentes na mandíbu-la, ocorrendo duas ou três vezes mais do que na maxila 4,11,30 , podendo atingir várias áreas da cavidade bucal, como: glândulas parótidas e submandibulares, língua, assoalho bucal, palato, seios maxilares, orofaringe, região retromolar e processo alveolar.…”
Section: Introductionunclassified