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Head and Neck
Front View of Nasal Sinuses
Head and Neck - Frontal Sinus: Massachusetts General Hospital Cancer Center, Boston, MA

  • Front View of Head showing location of Nasal Sinuses. There are 4 pairs of paranasal sinuses (one not shown).
  • A sinus is a cavity (space) in the skull bones that connects to the inside of the nose.
  • Sinuses help to warm, moisten and filter the air we breathe and produce mucous.
  • Cancer can occur in the tissue that lines the sinus cavities.

Source: Maxwell V. Blum Cancer Resource Room
Massachusetts General Hospital, Boston, MA