7 research outputs found
The Efficacy of Magnetic Resonance Imaging and Color Doppler Ultrasonography in Diagnosis of Salivary Gland Tumors
Background and aims. Although salivary gland tumors are not very common, early diagnosis and treatment is crucial
because of their proximity to vital organs, and therefore, determining the efficacy of new imaging procedures becomes important.
This study aimed to evaluate the efficacy of magnetic resonance imaging (MRI) and color doppler ultrasonography
parameters in the diagnosis and differentiation of benign and malignant salivary gland tumors.
Materials and methods. In this cross-sectional study, color doppler ultrasonography and MRI were performed for 22 patients
with salivary gland tumor. Demographic data as well as MRI, color doppler ultrasonography, and surgical parameters
including tumor site, signal in MRI images, ultrasound echo, tumor border, lymphadenopathy, invasion, perfusion, vascular
resistance index (RI), vascular pulse index (PI) were analyzed using Chi-square test, Fisher’s exact test, and independent ttest.
Results. The mean age of patients was 46.59±13.97 years (8 males and 14 females). Patients with malignant tumors were
older (P < 0.01). The most common tumors were pleomorphic adenoma (36.4%), metastasis (36.4%), and mucoepidermoid
carcinoma (9%). Nine tumors (40.9%) were benign and 13 (59.1%) were malignant. The overall accuracy of MRI and color
doppler ultrasonography in determining tumor site was 100% and 95%, respectively. No significant difference observed
between RI and PI and the diagnosis of tumor.
Conclusion. Both MRI and ultrasonography have high accuracy in the localization of tumors. Well-identified border was a
sign of benign tumors. Also, invasion to adjacent structures was a predictive factor for malignancy