case_images: PMC3420503_01
case_images: (a) Initial facial axial CT scan showing a mixed iso- and hyperdense mass (black star) of the right lateral nasal wall extending to the left orbit, (b) facial axial CT scan one month later showing progression of the tumor to involve the right maxillary sinus, the nasal fossa.
case_images: CRIM.OTOLARYNGOLOGY2011-786202.001.jpg
case_images: PMC3420503_01_CRIM.OTOLARYNGOLOGY2011-786202.001.jpg
case_images: fig1
case_images: This mass showed mixed isodense and hyperdense signals (Figure 1(a)).  It showed an important progression of the tumor to involve the right maxillary sinus, the nasal fossa, and the floor of the orbit (Figure 1(b)).
case_images: Histopathological examination showing osteoid (black arrow head) surrounded by multiple cellular atypia.
case_images: CRIM.OTOLARYNGOLOGY2011-786202.002.jpg
case_images: PMC3420503_01_CRIM.OTOLARYNGOLOGY2011-786202.002.jpg
case_images: fig2
case_images: Histopathological examination revealed high-grade osteosarcoma (Figure 2). 