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  • Title: Computed tomography and ultrasonography in parotid tumors.
    Author: Isaza M, Ikezoe J, Morimoto S, Takashima S, Kadowaki K, Takeuchi N, Sano M, Nakao K, Kozuka T.
    Journal: Acta Radiol; 1989; 30(1):11-5. PubMed ID: 2536549.
    Abstract:
    To determine the most appropriate radiographic approach to parotid tumors, computed tomography (CT) was performed in 65 patients with 33 benign tumors, 19 malignant tumors, 3 abscesses and 10 other lesions with a clinical appearance of tumor. In 22 of the 65 cases CT-sialography and in 26 ultrasonography (US) were also performed. The mass was well recognized on CT without sialography in all patients, and the lesion was also well evaluated in all those examined with US. At CT-sialography the tumor was well shown, but this method made it difficult to differentiate a benign from a malignant lesion, because the character of the delineation and the border of the tumor were difficult to evaluate. It is concluded that US and CT without sialography are satisfactory for evaluating the parotid tumor, and the indication for CT-sialography is limited to those cases in which the tumor is demonstrated on US, but is unclear on conventional CT.
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