Keywords:
Performed at one institution, Observational, Retrospective, Neoplasia, Cancer, Diagnostic procedure, Biopsy, Ultrasound-Colour Doppler, Ultrasound, Thyroid / Parathyroids, Oncology, Oncologic Imaging
Authors:
B. L. Pereira1, A. P. A. F. Martins 1, B. N. Passamani1, F. C. Barros1, R. A. pinto da silva1, O. L. D. L. REIS1, P. A. L. Tito1, J. G. Domingues2, A. D. A. Ribeiro1; 1Belo Horizonte/BR, 2Belo Horizonte, MG/BR
DOI:
10.26044/ecr2020/C-10742
Methods and materials
Population:
This is a retrospective study conducted from January to March 2018. The study population was composed of people of both genders, regardless of age or ethnicity, who underwent an ultrasound exam and guided-fine needle aspiration (FNA) in our service. Two hundred and six nodules were analyzed from the examination of 200 patients: 60 men with a mean age of 65 (range 18- 80 years); 140 women, mean age of 55 (range 18-75 years). Patients previously diagnosed with thyroid cancer or who have had thyroidectomy were excluded from the study.
Data acquisition:
A single radiologist (20 years experience in performing thyroid US) performed all US examinations with a high-resolution Aplio 400 machine (Toshiba Medical Systems, Tokyo, Japan). An 8-15 MHz linear-array transducer was used.
Image analysis:
These exams were analyzed by an expert radiologist using the (1) 2015 ATA classification, (2) 2017 ACR TI-RADS classification and (3) his subjective impression of the nodule, which were classified in malignant, undetermined or benign. Additionally, each imaging descriptors of the nodules that can predict malignancy (echogenicity, size, echogenic foci and vascularization) were analyzed separately. Beyond the descriptive analysis, these findings were correlated with the Bethesda cytological result obtained by FNA using Spearman test.