Abstract

Between March 1985 and March 1988 109 patients with tumours of the oral cavity and the oropharyngeal region underwent 123 examinations by orthopantomography and realtime sonography for primary staging and/or diagnosis of a recurrent disease. In 105 cases the preoperative results could be compared to intraoperative and histopathological findings. Realtime sonography as a noninvasive, inexpensive and efficient method offered the ideal diagnostic adjunct to the orthopantomogram. Not only size, shape and structure of the soft tissue tumour could be accurately defined; whatsmore it was possible to demonstrate its relation to bony structures and to a high degree of sensitivity cortical invasion and periosteal reaction. The limitations of the method especially the risk of false positive findings after invasive diagnostic and therapeutic procedures are pointed out.

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