Keywords:
Endocrine disorders, Cancer, Surgery, Radiation therapy / Oncology, Ultrasound-Colour Doppler, Ultrasound, Elastography, Thyroid / Parathyroids, Oncology, Head and neck
Authors:
E. Kostromina1, A. Mishchenko2, E. Fisenko3, L. Berstein4, E. Busko1, Z.-G. Radjabova 4, D. Vasiliev4, L. A. Krasilynikova4, E. N. Logacheva5; 1St. Petersburg/RU, 2St.Petersburg/RU, 3Moscow/RU, 4St. -Peterburg/RU, 5Sant-Peterburg/RU
DOI:
10.26044/ecr2019/C-1558
Aims and objectives
Diseases of the thyroid gland occupy a key place in the structure of endocrine pathology,
palpable nodular goiter become apparent with 2 -5% in the general population.
In the structure of nodular goiter,
malignant tumors account for 1-5% [1].
The frequency of manifestations new cases of nodules is 0.1% per year.
Ultrasound examination (US),
despite the proven high informative value in the differential diagnosis of thyroid masses,
has limitations.
Native US (B-mode) allows to evaluate the morphological signs of the formations,
especially the shape,
contour,
structure and modes of the color Doppler (CD) + power Doppler (PD) - the degree of tumor vascularization.
However,
these ultrasound signs do not always allow differentiating malignant and benign lesions with the required degree of accuracy and reliability and are not pathognomonic [5,9].
Sonoelastography - new technology that expands diagnostic capabilities.
It is a non-invasive method of ultrasound diagnostics,
by which it is possible to study such physical properties as stiffness.
Modern elastography is represented by two main techniques: real-time elastography (RTE),
and shear wave elastography (SWE) [8,12,15].
It was reported that the sensitivity and specificity of elastography was better with differentiation of benign and malignant thyroid nodes than conventional technologies (B-mode,
Color Doppler) [3,6,10,11].
The study was intended to assess the diagnostic value of the qualitative and quantitative pattern of the elasticity of the shear wave (SWE) and deformation elastography (RTE) in the differentiation of malignant tumors from benign thyroid nodules [8,15,16].
When assessing patterns of qualitative compression elastography,
certain difficulties are noted in the study of solid cystic formations in the thyroid gland,
with a cystic component of more than 50%,
which creates certain difficulties in diagnosis [4,7].
A qualitative assessment of the stiffness indicators of both compression elastography and shear wave will provide an opportunity to improve the diagnostic accuracy of the method [1,2,12,14]