Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Av Limeira, 901, Areião, Piracicaba, São Paulo, 13414-018, Brazil.
Division of Oral Radiology, Department of Dentistry, Federal University of Juiz de Fora/Governador Valadares Advanced Campus, Av Doutor Raimundo Rezende, 330-Centro, Governador Valadares, Minas Gerais, 35012-140, Brazil.
Oral Radiol. 2019 Jan;35(1):68-72. doi: 10.1007/s11282-017-0310-z. Epub 2017 Dec 29.
The aim of this study was to report the first case of diagnosis of a rare ethmoid sinolith by cone-beam computed tomography (CBCT) and discuss the importance of carefully assessing the entire volume of the images regardless of the region of interest.
A 22-year-old woman underwent CBCT examination to assess the upper permanent canine teeth. Analysis of the entire volume of CBCT revealed an oval-shaped hyperdense, homogeneous, expansive formation with defined boundaries located in the ethmoid bone. The differential diagnosis of a sinolith in the ethmoid sinus was confirmed after removal of the lesion by nasoendoscopy and histopathological examination.
The diagnosis of lesions in the ethmoid sinus is challenging because of the complex anatomy of this region. Considering the limitations of two-dimensional X-ray examination, CBCT examination has become an important imaging modality for the diagnosis of these calcifications. In addition, the ability of the dental surgeon to assess the entire volume of the CBCT images and the knowledge of imaging features of these calcifications allows for recognition of incidental findings, facilitating early diagnosis and appropriate treatment.
本研究旨在通过锥形束计算机断层扫描（CBCT）报告首例罕见筛窦结石的诊断，并讨论无论关注区域如何，仔细评估整个图像容积的重要性。
一名 22 岁女性接受 CBCT 检查以评估上颌恒尖牙。对 CBCT 整个容积的分析显示，在筛骨中有一个椭圆形高密度、均匀、膨胀性的形成物，边界清晰。经鼻内窥镜和组织病理学检查切除病变后，确认了筛窦结石的鉴别诊断。
由于该区域的复杂解剖结构，筛窦病变的诊断具有挑战性。考虑到二维 X 射线检查的局限性，CBCT 检查已成为诊断这些钙化的重要影像学方法。此外，牙医评估 CBCT 图像整个容积的能力以及对这些钙化的影像学特征的了解，可以识别偶然发现，有助于早期诊断和适当治疗。
