case_images: PMC6304863_01
case_images: Axial CT image showing a soft tissue mass centered at the posterior nasal septum with extension into the nasopharynx.
case_images: CRIOT2018-1413960.001.jpg
case_images: PMC6304863_01_CRIOT2018-1413960.001.jpg
case_images: fig1
case_images: Preoperative CT imaging showed a smoothly marginated, soft tissue density mass centered at the posterior nasal septum with extension into the nasopharynx and bulging into the right sphenoid sinus (Figure 1).
case_images: Intraoperative image of the mass protruding from the posterior septum within the left nasal cavity.
case_images: CRIOT2018-1413960.002.jpg
case_images: PMC6304863_01_CRIOT2018-1413960.002.jpg
case_images: fig2
case_images: Intraoperatively, a large mass was seen in the posterior aspect of the septum, bulging into the bilateral nasal cavities and extending into the sphenoid sinuses (Figure 2).
case_images: (a) H&E of the septal mass showing a "zellballen" pattern of clusters of epithelioid cells between bands of fibrillary stroma (20x). IHC staining showing positivity for (b) chromogranin A within epithelioid cells (40x), (c) synaptophysin within epithelioid cells (20x), and (d) S-100 within fibrillary cells (20x).
case_images: CRIOT2018-1413960.003.jpg
case_images: PMC6304863_01_CRIOT2018-1413960.003.jpg
case_images: fig3
case_images: Postoperative histologic analysis of the specimen was consistent with a paraganglioma (Figure 3).