case_images: PMC7584270_01
case_images: (a) A CT scan axial cut soft tissue setting showing the non-enhancing soft-tissue density from the left posterior ethmoid sinus breached the lamina papyracea. (b) The mass extended downward into the maxillary infundibulum.
case_images: MEDJ-35-276-f1.jpg
case_images: PMC7584270_01_MEDJ-35-276-f1.jpg
case_images: F1
case_images: A computed tomography (CT) scan of the patient's brain and orbit revealed non-enhancing soft-tissue density arising from the left posterior ethmoid sinus that breached the lamina papyracea (Figure 1a) and extended into the maxillary infundibulum (Figure 1b).
case_images: (H&E, x200) Spindle cells ( ) arranged in storiform, C and S shaped embedded within a fibromyxoid stroma. Perivascular hyalinization (*) with scattered lymphocytes, eosinophils and multinucleated giant cells.
case_images: MEDJ-35-276-f2.jpg
case_images: PMC7584270_01_MEDJ-35-276-f2.jpg
case_images: F2
case_images: The cells were arranged in storiform, C- and S-shaped patterns (Figure 2). Blood vessels in different sizes characterised by perivascular hyalinization with scattered lymphocytes, eosinophils, and multinucleated giant cells were also identified (Figure 2).
case_images: (H&E, x400) Spindle cells ( ) are shown more clear. Slightly mitotic figures were seen (*).
case_images: MEDJ-35-276-f3.jpg
case_images: PMC7584270_01_MEDJ-35-276-f3.jpg
case_images: F3
case_images: Mitotic figures were only rarely seen (Figure 3).