case_images: PMC10882638_01
case_images: CT scan (bony window) coronal cut shows soft tissue lesion filling the left maxillary sinus extending into the nasal cavity with widening of the infundibulum. Focal hyperostosis at the anterior ethmoid air cells. The left ethmoid and left frontal sinuses also appeared filled with the mass. There was suspicious bony erosion, especially near the anterior medial orbital wall.. Soft tissue lesion filling left maxillary sinus and nasal cavity (red arrow). Bony erosion near anterior medial orbital wall (red dashed arrow).
case_images: cureus-0016-00000052781-i01.jpg
case_images: PMC10882638_01_cureus-0016-00000052781-i01.jpg
case_images: FIG1
case_images: There was focal hyperostosis at the anterior ethmoid air cells (Figure 1).
case_images: CT scan (bony window) axial cut shows soft tissue lesion filling the left nasal cavity completely with rightward deflection of the nasal septum.. Rightward deflection of the nasal septum (red arrow).
case_images: cureus-0016-00000052781-i02.jpg
case_images: PMC10882638_01_cureus-0016-00000052781-i02.jpg
case_images: FIG2
case_images: The nasal septum was significantly pushed towards the right side (Figure 2).
case_images: MRI scan (T2 weighted). There was a heterogeneously enhancing lesion noted in the left nasal cavity with a classic cribriform appearance extending into the left maxillary sinus causing ostial widening. The abnormal signal was also extending into the left ethmoid, sphenoid, and frontal sinuses. There was bulging of the medial wall of the left maxillary sinus into the nasal cavity with rightward deflection of the nasal septum.. Cribriform appearance seen on the MRI scan (red arrows).
case_images: cureus-0016-00000052781-i03.jpg
case_images: PMC10882638_01_cureus-0016-00000052781-i03.jpg
case_images: FIG3
case_images: Naturally, the patient underwent an MRI scan of the sinuses, which revealed the cribriform appearance, a significant sign of IP lesions (Figure 3).
case_images: Histopathology shows inflamed mucosa with an abundance of seromucinous glands and thick-walled vessels. The structures were in a stroma consisting of glial tissue with astrocyte-like cells.
case_images: cureus-0016-00000052781-i04.jpg
case_images: PMC10882638_01_cureus-0016-00000052781-i04.jpg
case_images: FIG4
case_images: The structures were in a stroma consisting of glial tissue with astrocyte-like cells (reactive gliosis) (Figure 4).