Diagnosis of ethmoid sinolith by cone-beam computed tomography: case report and literature review
- 85 Downloads
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.
KeywordsCone-beam computed tomography Ethmoid sinus Paranasal sinus
The authors thank Espaço da Escrita (General Coordination—UNICAMP) for the language services provided.
Compliance with ethical standards
Conflict of interest
Eliana Dantas da Costa, Francielle Silvestre Verner, Priscila Dias Peyneau, Deborah Queiroz de Freitas, and Solange Maria Almeida declare that they have no conflict of interest.
Human rights statements
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.
Informed consent was obtained from the patient for being included in the study.
- 2.Nayak DR, Bhandarkar AM, Valiathan M, Sandeep VVK. Incidental ‘ethmoid sinolith’—an unusual cause of frontal recess obstruction. BMJ Case Rep. 2014;2014.Google Scholar