case_images: PMC7569445_01
case_images: Endoscopic examination of the nose showing a large, left-sided nasal polypoid mass occluding the entire left nasal cavity.
case_images: CRIOT2020-4369620.001.jpg
case_images: PMC7569445_01_CRIOT2020-4369620.001.jpg
case_images: fig1
case_images: It was causing nasal obstruction on the left side of the nose (Figure 1).
case_images: CT scan of the paranasal sinuses with contrast. The coronal and axial section shows a left anterior nasal mass.
case_images: CRIOT2020-4369620.002.jpg
case_images: PMC7569445_01_CRIOT2020-4369620.002.jpg
case_images: fig2
case_images: In paranasal sinus computed tomography (CT), approximately 16 x 40 x 35 mm-sized polypoid mass was observed on the left side, filling the nasal cavity completely (Figure 2).
case_images: MRI scan of the paranasal sinuses with contrast. The coronal and axial section shows a left anterior heterogeneous hypointense nasal mass.
case_images: CRIOT2020-4369620.003.jpg
case_images: PMC7569445_01_CRIOT2020-4369620.003.jpg
case_images: fig3
case_images: T1 and T2 sections (Figure 3). The surgery was planned to the patient under general anesthesia.
case_images: Gross image of the mass revealed multiple fragments of soft tan-gray tissue.
case_images: CRIOT2020-4369620.004.jpg
case_images: PMC7569445_01_CRIOT2020-4369620.004.jpg
case_images: fig4
case_images: The mass was excised en bloc with the septum mucosa (Figure 4).
case_images: Histopathological examination showing high cellular density and a palisading pattern of the tumor cells (x40 power, H&E-stained microscopic slide picture).
case_images: CRIOT2020-4369620.005.jpg
case_images: PMC7569445_01_CRIOT2020-4369620.005.jpg
case_images: fig5
case_images: In the histological examination of the mass, spindle cell proliferation consisting of photocellular and hypocellular alternating areas and diffuse positivity in spindle cells with S100 were observed (Figures 5 and 6).
case_images: Immunohistochemistry showing tumor cells that are strongly positive for S-100.
case_images: CRIOT2020-4369620.006.jpg
case_images: PMC7569445_01_CRIOT2020-4369620.006.jpg
case_images: fig6
case_images: In the histological examination of the mass, spindle cell proliferation consisting of photocellular and hypocellular alternating areas and diffuse positivity in spindle cells with S100 were observed (Figures 5 and 6).