case_images: PMC9450681_01
case_images: Preoperative CT scan: mucosal thickening in the sphenoethmoidal recess matching the endoscopic finding.
case_images: gr1.jpg
case_images: PMC9450681_01_gr1.jpg
case_images: fig1
case_images: Paranasal sinus CT scan showed a mass in the sphenoethmoidal recess, of soft tissue density, matching the endoscopy result (Figure 1).
case_images: Postoperative CT: complete removal of the lesion.
case_images: gr2.jpg
case_images: PMC9450681_01_gr2.jpg
case_images: fig2
case_images: We then decided for a total sphenoethomoidectomy, and lesion exeresis in its origin in the sphenoethmoidal recess with free mucosal margin. (Figure 2).
case_images: Histology cross-section of the lesion, showing the characteristic inversion of the epithelium surface to inside the stroma of the inverted papilloma.
case_images: gr3.jpg
case_images: PMC9450681_01_gr3.jpg
case_images: fig3
case_images: The pathology exam showed an inverted papilloma, with no malignancy signs (Figure 3, Figure 4).
case_images: Histology cross-section of the inverted papilloma, without malignancy.
case_images: gr4.jpg
case_images: PMC9450681_01_gr4.jpg
case_images: fig4
case_images: The pathology exam showed an inverted papilloma, with no malignancy signs (Figure 3, Figure 4).