Abstract
Background: No previous studies have investigated the feasibility of magnetic resonance imaging (MRI) diagnosis for detecting incidental diffuse thyroid disease (DTD). This study investigated MRI features of normal thyroid parenchyma and incidental DTD.Methods: From January 2008 to December 2017, 387 patients underwent neck MRI in our hospital due to tumor/nodal staging (n = 137), lymphadenopathy (n = 122), inflammatory neck lesion (n = 85), congenital neck lesion (n = 12), and patient request (n = 31). Among them, 375 patients were excluded because of a lack of appropriate histopathological data on the thyroid parenchyma.Results: Among the patients included, 10 had normal thyroid parenchyma, 1 had Hashimoto thyroiditis, and 1 had diffuse hyperplasia. The common MRI features of normal thyroid parenchyma include iso-/slightly high and homogeneous signal intensity on T1/T2-weighted images, normal anteroposterior diameter of the thyroid gland, smooth margin, and homogeneously increased enhancement as compared to adjacent muscle. Hashimoto thyroiditis exhibited high and inhomogeneous signal intensity on T2-weighted images, while diffuse hyperplasia revealed an increased anteroposterior diameter and lobulated margin of the thyroid gland, and inhomogeneous enhancement.Conclusions: MRI may be helpful for detection of incidental DTD.
Highlights
Thyroid disease includes diffuse and nodular types [1]
No previous studies have investigated the feasibility of magnetic resonance imaging (MRI) diagnosis for detecting incidental diffuse thyroid disease (DTD)
This study investigated MRI features of normal thyroid parenchyma and incidental Diffuse thyroid disease (DTD)
Summary
Diffuse thyroid disease (DTD) may be associated with thyroid dysfunction, and the thyroid function test and serology are widely used in evaluating thyroid dysfunction [2]. Magnetic resonance imaging (MRI) is reported to be helpful for differentiating Graves’ disease from Hashimoto thyroiditis or painless thyroiditis [11,12,13,14]. Diffusion-weighted MRI may be helpful for differentiation between Hashimoto thyroiditis, Graves’ disease, and painless thyroiditis [13, 14]. No previous studies have investigated the feasibility of using MRI for detection of incidental DTD. No previous studies have investigated the feasibility of magnetic resonance imaging (MRI) diagnosis for detecting incidental diffuse thyroid disease (DTD). This study investigated MRI features of normal thyroid parenchyma and incidental DTD
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