CASE HISTORY / CLINIC:
57-year-old man with increasing nasal obstruction for months. Left-sided exophthalmus and increasing protrusion in the left cheek for some weeks now.


FINDINGS:
The coronal CT scan at bony window demonstrates a large mass lesion in the left nasal cavity and ethmoidal cells. The nasal septum is displaced to the right. The hard palate is missing due to a previous operation. The mass demonstrates laminar calcifications and extends cranially into the left orbital cone. The axial CT scan also demonstrates this tumor with laminar calcifications. A fibula graft is visualized in the location of the left maxilla due to the previous operation.

DIAGNOSIS:
Large relapse of an osteosarcoma located in the left nasal cavity and extending to the palate and left orbita.
DIFFERENTIAL DIAGNOSIS:
Chondrosarcoma



Suggestions for further reading:

1) Amersham Health
2) Medecoinfo
3) Medicine Worldwide
4) AHC-Consilium