Mucosal Thickening Occurs in Contralateral Paranasal Sinuses following Sinonasal Malignancy Treatment

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Abstract

Objective

To investigate the incidence and degree of contralateral sinus disease following treatment of sinonasal malignancy (SNM) using radiological findings as an outcome measure.

Study Design

Retrospective case series.

Setting

Tertiary referral academic center.

Participants

Patients with SNM treated with surgical and adjuvant radiotherapy with or without concurrent chemotherapy.

Main Outcome Measures

Pre- and posttreatment computed tomography and magnetic resonance imaging scans, Lund-Mackay (LM) score, date of diagnosis, chemotherapy, and dosage of radiation therapy (RT).

Results

There was a significant difference between pre- and posttreatment LM scores (p < 0.001) of the contralateral paranasal sinuses. There was no statistical significance between the change in pre- and posttreatment LM scores and patient age, gender, chemotherapy, RT dosage, and time lapse between diagnosis and when we performed this study in the univariate and the multivariable analyses.

Conclusions

Following treatment of SNM with surgical resection and RT, there was a significant increase in incidence and degree of mucosal thickening of the contralateral sinus by LM grading that persisted after the completion of treatment. This indicates the need for long-term follow-up to monitor for chronic rhinosinusitis as a delayed complication following treatment of SNM.

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