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Vol. 88. Issue S2.
Pages 12 (November - December 2022)
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Vol. 88. Issue S2.
Pages 12 (November - December 2022)
Open Access
Tomographic changes of the paranasais sinuses of patients with Covid-19
Enrico Guido Oliveira Minnitia, Laura Martins Giraldia,
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Corresponding author.
, Ricardo Rabello Ferreirab, Roberto Hyczy Ribeiro Filhoa,c, Marco Cesar Jorge dos Santosa,c
a Departamento de Otorrinolaringologia, Hospital Universitário Cajuru, Pontifícia Universidade Católica do Paraná (PUCPR), Curitiba, PR, Brazil
b Centro Diagnóstico Água Verde, Curitiba, PR, Brazil
c Instituto Paranaense de Otorrinolaringologia (IPO), Curitiba, PR, Brazil
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Vol. 88. Issue S2
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Objective: To verify the presence of tomographic alterations in the paranasais sinus of patients diagnosed with Covid-19 and to evaluate the presence of an association between olfactory symptoms and the involvement of these sinus.

Methods: This is an observational cross-sectional study that analyzed computed tomography of the nose and paranasal sinus (SSCT) of patients with Covid-19 regarding the presence of mucous thickening in the paranasal sinus. Patients who underwent RT-PCR examination for detection of Covid-19 (SARS-CoV-2) and TCSPN infection from March 2020 to March 2021 were included. Patients with a history of previous nasosinusal surgery, recent facial trauma, age below 18 years or with incomplete information in medical records were excluded.

Results: A total of 65 individuals were included, of whom 28 were diagnosed with Covid-19. In tomographic analysis, an association was observed between Covid-19 infection and mucous thickening of the bilateral maxillary sinus (p=0.038) and mucous thickening of the bilateral ethmoidal sinus (p=0.005). No significant association was found between mucous thickening of the sphenoid and frontal sinus with virus infection. The complaint of olfactory dysfunction was reported by 20% of the patients, with no association with tomographic alterations or Covid-19 infection.

Conclusion: Covid-19 virus infection possibly causes an injury to the mucosa of ethmoidal cells due to the inflammatory process resulting from viral infection. The lesion of the mucosa of the ethmoidal sinuses may cause alteration in the drainage physiology of the maxillary sinuses due to blockade of the middle meatal tract – site of drainage of the maxillary sinus – and lead to edema of the mucosa of this sinus. This change in the mucosa of the ethmoidal sinus may also be the cause of olfactory disorders presented by patients, as well as may cause lesions in the olfactory nerve.

Keywords: Covid-19; SARS-CoV-2; Anosmia; Tomography; Paranasal sinuses.

Brazilian Journal of Otorhinolaryngology (English Edition)

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