Abstract
The aim of this study is 1) to obtain the area and volumes of the maxillary sinuses in patients affected by clinically unilateral sinus pathology by comparing the results to the contralateral sinus and 2) to determine the importance of the volumetric measures when diagnosing the percentage of sinus obliteration. A single-centre observational retrospective clinical study was conducted in 214 patients with clinically unilateral sinus pathologies. Linear (mm), area (mm2) and volume (mm3) measurements were taken from Cone Beam Computed Tomography (CBCT) images of the affected sinus as well as from the contralateral ones. Histopathological study was performed using haematoxylin/eosin and PAS or Groccot stains. The lesions were classified into non-specific sinusitis, polyps, inverted papilloma, fungal sinusitis, cysts, mucocele and other lesions. Chi-squared test, ANOVA for independent samples and Pearson test were used for the statistical analysis. A total of 100 sinuses were measured in 50 patients (28 men and 22 women, with an age of 43.6 years (SD = 18.3), 50 pathological and 50 healthy contralateral sinuses. The three-dimensional occupation volume of the affected sinuses was 97.1 mm3 (62.5%) vs. 40.6 mm3 (22.8%) in the healthy ones (p<0.0001). The medial-lateral width of the sinus in the frontal plane was significantly higher in the cysts group (32.4 mm, CI: 23-41.8 mm). In medical terms, the global percentage of occupation determined using the classic manual determination method does not differ from the three-dimensional percentage calculated using specific complex software.
Highlights
The quantification of the measures, areas and volumes of the maxillary sinus can be a complex and tedious process, it is very useful for determining its affectation and/or level of obliteration [1]
The threedimensional occupation volume of the affected sinuses was 97.1 mm3 (62.5%) vs. 40.6 mm3 (22.8%) in the healthy ones (p
The aim of this study is 1) to obtain the area and volumes of the maxillary sinuses in patients affected by clinically unilateral sinus pathology by comparing the results to the contralateral sinus and 2) to determine the importance of the volumetric measures when diagnosing the percentage of sinus obliteration
Summary
The quantification of the measures, areas and volumes of the maxillary sinus can be a complex and tedious process, it is very useful for determining its affectation and/or level of obliteration [1]. The anatomic dimensions of different structures, including paranasal sinuses, can be measured using computed tomography images (CT) [3]. The anatomic features observed in reconstructed CT images confirm the variability in terms of the shape of the maxillary sinus. The differences between the sinus areas and volumes have proved to be of interest, to otorhinolaryngologists or radiologists, in terms of the involvement of the ostium area which enables drainage into the nasal cavity, and to odontologists and maxillofacial surgeons who are intending to perform bone graft and sinus elevation procedures and who look to evaluate the sinus involvement in processes of odontogenic origin [4]
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