Bedeutung der Ganzkörper-Skelettszintigraphie im Rahmen des Staging von Malignomen im HNO-Bereich*

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Abstract
Concerning malignant tumours of the oral cavity, pharynx and larynx, bone metastases are in general rarely seen. For the specification to which patients the whole body bone scintigraphy as detection method should be applied, the findings of 370 patients were analysed retrospectively. In respect of primary staging, bone metastases could be found by scintigraphy in only 1.4% of the patients. On the other hand, there was a detection rate of 12% during the further course of the disease, especially in case of clinical symptoms pointing at spreading metastases or in tumour recurrences. Nevertheless, positive scan findings which were not due to metastases could be found in both groups with equal frequency (12 and 13%, respectively). Therefore the routine performance of whole body bone scintigraphy as a screening method does not seem to be useful in the primary staging of cancer of the mouth, pharynx and larynx. Contrary to this, in the follow-up of these tumours bone scanning proves to be a valuable and sensitive method for detecting skeletal metastases.

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