case_images: PMC4860918_01
case_images: Computed tomography scan: Mass in right maxillary antrum, extending to right nasal cavity
case_images: JOMFP-20-147-g001.jpg
case_images: PMC4860918_01_JOMFP-20-147-g001.jpg
case_images: F1
case_images: Bone destruction was seen in both the lateral wall of maxillary sinus and inferior wall of the orbit, with infiltration into the anterior ethmoidal sinus [Figure 1].
case_images: Gross morphology of the specimen: Multiple pieces of grayish yellow-colored firm tissue
case_images: JOMFP-20-147-g002.jpg
case_images: PMC4860918_01_JOMFP-20-147-g002.jpg
case_images: F2
case_images: Tissue was sent in multiple pieces altogether measuring 8 cm x 7 cm x 2.5 cm [Figure 2].
case_images: Scanner view of tumor showing the overall variegated appearance (H&E stain, x40)
case_images: JOMFP-20-147-g003.jpg
case_images: PMC4860918_01_JOMFP-20-147-g003.jpg
case_images: F3
case_images: Microscopic examination of the sections from different areas showed variegated appearance having intimate admixture of carcinomatous, sarcomatous, primitive neuroectodermal and teratoid elements [Figure 3].
case_images: Photomicrograph of sarcomatous component with chondroid differentiation (H&E stain, x200)
case_images: JOMFP-20-147-g004.jpg
case_images: PMC4860918_01_JOMFP-20-147-g004.jpg
case_images: F4
case_images: Sarcomatous component was predominantly having chondroid differentiation with foci of endochondral calcification [Figure 4].
case_images: Photomicrograph of carcinomatous component (adenocarcinoma) (H&E stain, x200)
case_images: JOMFP-20-147-g005.jpg
case_images: PMC4860918_01_JOMFP-20-147-g005.jpg
case_images: F5
case_images: Areas of moderately differentiated adenocarcinoma were noted [Figure 5] along with undifferentiated primitive neuroectodermal elements in solid sheets [Figure 6].
case_images: Photomicrograph of primitive neuroectodermal component (H&E stain, x400)
case_images: JOMFP-20-147-g006.jpg
case_images: PMC4860918_01_JOMFP-20-147-g006.jpg
case_images: F6
case_images: Areas of moderately differentiated adenocarcinoma were noted [Figure 5] along with undifferentiated primitive neuroectodermal elements in solid sheets [Figure 6].
case_images: Photomicrograph of squamous component (H&E stain, x100). Inset: High power view of keratin pearl (H&E stain, x400)
case_images: JOMFP-20-147-g007.jpg
case_images: PMC4860918_01_JOMFP-20-147-g007.jpg
case_images: F7
case_images: Immature squamous elements with formation of keratin pearls were seen at places, which were the teratoid element of the tumor [Figure 7].