PMC3420503_01
(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.
CRIM.OTOLARYNGOLOGY2011-786202.001.jpg
PMC3420503_01_CRIM.OTOLARYNGOLOGY2011-786202.001.jpg
fig1
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)).
Histopathological examination showing osteoid (black arrow head) surrounded by multiple cellular atypia.
CRIM.OTOLARYNGOLOGY2011-786202.002.jpg
PMC3420503_01_CRIM.OTOLARYNGOLOGY2011-786202.002.jpg
fig2
Histopathological examination revealed high-grade osteosarcoma (Figure 2). 