Objectives: In this study, we aimed to evaluate the eustachian tube paratubal structures of patients with unilateral nasal obstruction using magnetic resonance imaging (MRI). Patients and Methods: Between January 2018 and December 2020, a total of 30 patients (17 males, 13 females; mean age: 56 years; range, 18 to 67 years) who were followed with a diagnosis of unilateral nasal mass in our clinic and evaluated by MRI were included in the study. The thickness, length, and mean muscle volumes of tensor veli palatini and levator veli palatini muscles were measured from the largest section obtained from the MRI sections and compared with the healthy side measurements. Results: Themeantensorvelipalatinimusclethickness,length, and volume of the patients with nasal obstruction were 3.7±0.6 mm, 26.4±2.1 mm, and 2.1±0.5 cm³, respectively. The mean levator veli palatini muscle thickness, length, and volume were 5.7±0.5 mm, 23.9±2.3 mm, and 3.0±0.6 cm³, respectively. There was no statistically significant difference between the paratubal structures of the sides with and without obstruction (p>0.05). Conclusion: This study showed that unilateral nasal obstruction did not pose a significant change in the eustachian tube paratubal structures. However, further large-scale, longer-term clinical studies are needed on this subject.