What does "Posterior ethmoid air cells" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
"Posterior ethmoid air cells" refers to small, hollow spaces located within a part of the skull called the ethmoid bone, which is situated near the nose and eyes. These spaces are filled with air and are located towards the back of the ethmoid bone. They are part of the paranasal sinuses, a group of air-filled spaces that surround the nasal cavity.
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