Khasawneh Abdullah, Takeshita Yohei, Hisatomi Miki, Kawazu Toshiyuki, Fujita Mariko, Okada Shunsuke, Namba Yuri, Shimizu Yudai, Yanagi Yoshinobu, Asaumi Junichi
Department of Oral and Maxillofacial Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.
Department of Oral Diagnosis and Dentomaxillofacial Radiology, Okayama University Hospital, Okayama 700-8558, Japan.
Oncol Lett. 2020 Mar;19(3):2005-2010. doi: 10.3892/ol.2020.11298. Epub 2020 Jan 13.
The numbers of abnormal findings incidentally detected in adjacent regions are increasing with advances in imaging modalities. The present study aimed to examine the prevalence and characteristics of incidental findings in the thyroid gland on computed tomography (CT) images of the oral and maxillofacial region. CT scans of the oral and maxillofacial region in patients obtained between January 2012 and December 2016 were retrospectively reviewed. Images that revealed incidental findings in the thyroid gland, including nodules, were recorded, together with the sizes and characteristics of the findings. The Japan Association of Breast and Thyroid Sonology (JABTS) guidelines were used for classification. The rate of descriptions of these findings in the radiographic interpretation reports were also examined. Of the 1,135 patients examined, 326 (28.7%) had several types of incidental findings. In particular, 169 (14.9%) of the 1,135 patients had nodules >5 mm in diameter, for which further careful examination is recommended in the JABTS guideline. The description rate for nodules >5 mm in diameter in the radiographic interpretation reports was 30.8% (52/169 patients), of whom 17.3% (9/52 patients) were referred to the endocrinology department for further careful examination. Incidental findings in the thyroid gland were relatively common on CT images of the oral and maxillofacial region. Oral radiologists tend to focus specifically on the oral and maxillofacial region during diagnosis on oral and maxillofacial CT images, but should pay the same careful attention to observe adjacent regions, such as the thyroid gland.
随着成像技术的进步，在相邻区域偶然发现的异常结果数量不断增加。本研究旨在探讨口腔颌面区域计算机断层扫描（CT）图像中甲状腺偶然发现物的患病率和特征。回顾性分析了2012年1月至2016年12月期间患者的口腔颌面区域CT扫描结果。记录了甲状腺内发现的包括结节在内的偶然发现物的图像，以及这些发现物的大小和特征。采用日本乳腺和甲状腺超声学会（JABTS）指南进行分类。还检查了影像学解释报告中对这些发现的描述率。在1135例接受检查的患者中，326例（28.7%）有几种类型的偶然发现。特别是，1135例患者中有169例（14.9%）有直径>5mm的结节，JABTS指南建议对此进行进一步仔细检查。影像学解释报告中直径>5mm结节的描述率为30.8%（52/169例患者），其中17.3%（9/52例患者）被转诊至内分泌科进行进一步仔细检查。在口腔颌面区域的CT图像上，甲状腺的偶然发现相对常见。口腔放射科医生在口腔颌面CT图像诊断过程中往往特别关注口腔颌面区域，但也应同样仔细地观察相邻区域，如甲状腺。
