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The efficacy of magnetic resonance imaging and color Doppler ultrasonography in diagnosis of salivary gland tumors.

Davachi B, Imanimoghaddam M, Majidi MR, Sahebalam A, Johari M, Javadian Langaroodi A, Shakeri MT - J Dent Res Dent Clin Dent Prospects (2014)

Bottom Line: Conclusion.Well-identified border was a sign of benign tumors.Also, invasion to adjacent structures was a predictive factor for malignancy.

View Article: PubMed Central - HTML - PubMed

Affiliation: Assistant Professor, Department of Radiology, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.

ABSTRACT
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 t-test. Results. The mean age of patients was 46.59±13.97 years (8 males and 14females). 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.

No MeSH data available.


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Mentions: Tumor border was classified as well-defined, and ill-defined. T1 and T2 signals were categorized into hypointense if tumor signals were lower than adjacent muscles, isointense if signals were analogous, and hyperintense if tumor signals were higher than adjacent muscles (Figure 1). Homogenicity was classified as homogenous and heterogenous.


The efficacy of magnetic resonance imaging and color Doppler ultrasonography in diagnosis of salivary gland tumors.

Davachi B, Imanimoghaddam M, Majidi MR, Sahebalam A, Johari M, Javadian Langaroodi A, Shakeri MT - J Dent Res Dent Clin Dent Prospects (2014)

© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4288916&req=5

Mentions: Tumor border was classified as well-defined, and ill-defined. T1 and T2 signals were categorized into hypointense if tumor signals were lower than adjacent muscles, isointense if signals were analogous, and hyperintense if tumor signals were higher than adjacent muscles (Figure 1). Homogenicity was classified as homogenous and heterogenous.

Bottom Line: Conclusion.Well-identified border was a sign of benign tumors.Also, invasion to adjacent structures was a predictive factor for malignancy.

View Article: PubMed Central - HTML - PubMed

Affiliation: Assistant Professor, Department of Radiology, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.

ABSTRACT
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 t-test. Results. The mean age of patients was 46.59±13.97 years (8 males and 14females). 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.

No MeSH data available.


Related in: MedlinePlus