Ethmoid sinus cancer is a rare form of cancer that originates in the sinuses, behind the upper nose and between the eyes. Treatment might include surgery, chemotherapy, or radiation therapy. Although ...

This X-ray of a human skull highlights the main nasal cavity (orange) and the sinuses: frontal (pink), ethmoid (yellow), maxillary (green) and sphenoid (purple). Asian apes do not have frontal or ...