1Ali Aldhebaib, 1Yosef Alzahrani, 1 Gharam Meshal Alotaibi, Alaa Alangry, 1 Weam Alqahtani, 1 Aisha Mubarki, 1 Rana Oqailan

1King Abdulaziz Medical City, Riyadh

Introduction(s):

There are many types of thyroid tumors, including benign thyroid tumors, and there are also malignant tumors. Nowadays, doctors prefer to use ultrasound imaging in the diagnosis stage of thyroid nodules since it’s a non-invasive method. The aim of the study is a comprehensive of unbiased comparison of the results of the ACR TI-RADS classification Diagnostic and Evaluation System, with a combination of the use of FNA.

Material(s) and Method(s):

This study is based on a method of cross sectional retrospective study. The target population were the patients who came to radiology department with thyroid FNA and ultrasound orders at NGHA, Riyadh during the period between 1-1-2019 to 12-30-2020. The study sample of the patients who match the criteria 400 patients. Data were collected, including age, gender, date of referral, number of nodules, US classification, FNA and cytopathology report for each sides of thyroid.

Result(s):

Research team notice that there is no agreement between the results of both methods. Where most of the results of the cytopathology method for examine the thyroid nodules fell within the 1st classification. While most of the results of US fell within the 4th classification.

Conclusion(s):

This study was conducted on a group of 400 patients who came to the radiology department with thyroid biopsy and ultrasound orders at King Abdulaziz Medical City, Riyadh during the period from 1/1/2019 to 12/30/2020. The medical data of this research sample was reused and the results of TIRADS and FNA were compared. And based on the results of the comparison, the results showed that TIRADS were mostly of the fourth type (suspicious), while most of the results of FNA were mostly of the first type (benign). The results of the test showed that there was no correlation between the two methods.

The results of this study conflict with the study by Manikantan Ji et al., who reported that ultrasound imaging was very effective in determining the nature of thyroid lesions, with an accuracy of 84.5%. It also contradicts the results of a study by Popli MB et al, who reported an 87.2% diagnostic accuracy using the ACR TIRDS to diagnose benign and malignant thyroid lesions.

The study suffered from several limitations, most notably:

•The study was conducted in one center.

•Each radiologist has their own way in writing the report.