Abstract
Objectives
To assess if elasticity score (ES) and shear wave velocity (SWV) measurement obtained using ARFI elastography can differentiate between parathyroid lesions and thyroid nodules.
Materials and methods
ARFI elastography was performed on patients with primary hyperparathyroidism or solid thyroid nodules who were being considered for surgery using virtual touch quantification and virtual touch imaging (VTI) software. Only patients with surgical histopathology (47 parathyroid lesions, 38 benign thyroid nodules and 55 malignant thyroid nodules) were included for final analysis. SWV and ES of the parathyroid and thyroid nodules were compared and their ability to differentiate between parathyroid and thyroid was analyzed using receiver operating characteristic curve analysis.
Results
There were 39 solitary adenomas, 2 double adenomas and 4 parathyroid hyperplasias with mean size of 19.6 ± 9.7 mm in 44 patients (21 male, 23 females) with primary hyperparathyroidism. The mean SWV of the parathyroid lesion (1.6 ± 0.78 m/s) was significantly different from benign (2.11 ± 0.8 m/s) and malignant (4.3 ± 2.71 m/s) thyroid nodules, p < 0.05; so was the ES, Chi square = 51.6, p < 0.001. The majority of parathyroid lesions (n = 37, 78.7%) had ES of 2 with speckled (n = 42, 89.3%) appearance, and none showed ES of 4. The diagnostic performance of speckled appearance on VTI, elasticity score and SWV measurements was 0.901, 0.724 and 0.797, respectively, to differentiate between parathyroid and thyroid lesions.
Conclusions
Parathyroid lesions are softer than thyroid nodules. A shear wave velocity of 1.72 m/s can differentiate between parathyroid lesions and thyroid nodules.
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Discover the latest articles, news and stories from top researchers in related subjects.Abbreviations
- ARFI:
-
Acoustic radiation force impulse
- SWV:
-
Shear wave velocity
- ES:
-
Elasticity score
- BTN:
-
Benign thyroid nodules
- MTN:
-
Malignant thyroid nodules
- ROI:
-
Region of interest
- VTQ:
-
Virtual touch quantification
- VTI:
-
Virtual touch imaging
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This is an institution review board (IRB)-approved prospective study performed with informed consent.
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Consecutive patients with primary hyperparathyroidism considered for parathyroid surgery and patients with solid thyroid nodules considered for thyroidectomy were recruited into the study.
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Chandramohan, A., Therese, M., Abhraham, D. et al. Can ARFI elastography be used to differentiate parathyroid from thyroid lesions?. J Endocrinol Invest 41, 111–119 (2018). https://doi.org/10.1007/s40618-017-0694-y
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DOI: https://doi.org/10.1007/s40618-017-0694-y