case_images: PMC6108165_01
case_images: Postcontrast MRI post-contrast with AP (a) and sagittal (b) images showing enhancing lesion extending from nasal sinus to anterior cranial fossa with frontal lobe invasion. Post-operative postcontrast MRI post-contrast shows Axial axial (c) and AP (d) views with near total resection of mass
case_images: SNI-9-167-g001.jpg
case_images: PMC6108165_01_SNI-9-167-g001.jpg
case_images: F1
case_images: Magnetic resonance imaging (MRI) of the brain revealed a 7.0 x 6.2 x 4.4 cm enhancing mass extending across the cribriform plate and into the right anterior cranial fossa and right nasal cavity [Figure 1]. MRI showed no evidence of recurrence with expected postoperative changes [Figure 1].
case_images: Intra-operative images delineating our designated craniotomy (a). The dysplastic appearing dura visualized once craniotomy performed (b)
case_images: SNI-9-167-g002.jpg
case_images: PMC6108165_01_SNI-9-167-g002.jpg
case_images: F2
case_images: Tumor was found to be pale and hypervascular with a dural breach in the low frontal plane with involvement of the superior ethmoid sinus [Figure 2].
case_images: H and E stain (a) shows carcinoma and sarcoma components, p63 stain (b) highlights the carcinoma with squamous differentiation, PAN-CK stain (c) highlights carcinoma components, vimentin (d) highlights sarcoma, and undifferentiated tumor component
case_images: SNI-9-167-g003.jpg
case_images: PMC6108165_01_SNI-9-167-g003.jpg
case_images: F3
case_images: S100, CK 5/6, P63, synaptophysin, chromogranin, and GFAP. Staining negative for CD99 and neurofilament [Figure 3].