PMC3380239_01
Axial CT scan showing destruction of the lateral wall of the maxillary sinus by a heterogeneous tumor in the left nasal cavity. Bone dehiscence of the anterior wall of the sphenoid sinus is also noted (white arrow).
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F1
Nasal septal perforation due to prior endonasal resections was also observed (Figure 1 (Fig. 1) and Figure 2 (Fig. 2)).
Coronal CT scans showing (a) a lobulated tumor in the left nasal cavity and ethmoid sinus with extension to the periorbita (black arrow). The nasal septal perforation results from prior endonasal resections; b) bone erosion of the roof of the ethmoid sinus and the medial orbital wall (black arrows).
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F2
Nasal septal perforation due to prior endonasal resections was also observed (Figure 1 (Fig. 1) and Figure 2 (Fig. 2)).
Photomicrograph showing an endophytic epithelial growth into the underlying connective tissue. The epithelium is multilayer and the majority of which is non-keratinizing squamous epithelium. There is no malignant transformation. . (Hematoxylin & eosin stain, original magnification a: 50x, b: 100x)
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F3
Histopathological examination of the resected specimens confirmed the diagnosis of IP without evidence of malignancy (Figure 3 (Fig. 3)). 