Squamous cells are flat, skin like cells that cover the lining of the mouth, nose, larynx, thyroid, and throat. This type of cancer can spread to lymph nodes in the neck. Some of the most common head ...

Using a tube that is too large can cause trauma to the larynx and trachea, whereas a tube that is too small will not provide a large enough airway. An internal diameter of 6–8 mm is appropriate ...