Evaluation of Internal Echo Histograms of Head and Neck Tumors. (II).

概要

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In order to obtain ultrasonic clues for the differential diagnosis of tumors, we evaluated the internal echo histograms of 23 cases with head and neck tumors (14 malignant and 9 benign) with respect to standard deviation (SD) of the echo level and width of the histograms at 0%, 25%, 50%, 75% frequency.1) The average SD of the echo level of the malignant tumors was 8.2, which was significantly greater than that of the benign tumors (p<0.01).2) An analysis of the width of the histograms showed three patterns: bell type with wide base and sides for the malignant tumors, mountain type with a wide base for the benign tumors and mountain type with a narrow base for normal tissue.It was concluded that we can obtain objectively significant ultrasonic information from the SD of echo levels and the width of histograms for the differential diagnosis between benign and malignant tumors of the head and neck.
耳鼻咽喉科臨床学会の論文