Frontiers in Endocrinology (Mar 2022)

Value of Contrast-Enhanced Ultrasound in Mummified Thyroid Nodules

  • Sijie Chen,
  • Sijie Chen,
  • Kui Tang,
  • Kui Tang,
  • Yi Gong,
  • Fei Ye,
  • Liyan Liao,
  • Xiaodu Li,
  • Xiaodu Li,
  • Qi Zhang,
  • Qi Zhang,
  • Yan Xu,
  • Yan Xu,
  • Rongsen Zhang,
  • Rongsen Zhang,
  • Chengcheng Niu,
  • Chengcheng Niu

DOI
https://doi.org/10.3389/fendo.2022.850698
Journal volume & issue
Vol. 13

Abstract

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Mummified thyroid nodules (MTNs) are rarely reported and are usually misdiagnosed as malignant nodules. This article first reviewed the contrast-enhanced ultrasound (CEUS) enhancement features of 218 MTNs and classified them into three (A, B, C) patterns. The A pattern MTNs show linear hypo-enhancement, the B pattern MTNs show heterogeneous hypo-enhancement, and the C pattern MTNs show no enhancement in thyroid nodules. The A and C pattern enhancements of MTNs demonstrated a high specificity compared with the enhancement of previously reported typical papillary thyroid carcinomas (PTCs). To further study the B pattern MTNs, 24 B pattern MTNs and 42 PTCs were enrolled in this study, and CEUS parameters for each nodule were evaluated. Univariate analysis indicated that compared with PTCs, the B pattern MTNs more frequently exhibited heterogeneous hypo-enhancement and clear margins after clearance (p <0.05). A multivariate analysis revealed that heterogeneous hypo-enhancement and clear margins after clearance were independent characteristics related to the B pattern MTNs for differentiating them from PTCs (p <0.05). Thus, preoperative CEUS may provide more important information for distinguishing MTNs from malignant thyroid nodules to avoid surgical excisions or unnecessary fine-needle aspiration (FNA).

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