Areas include:

Ear, Nose and Throat (ENT).
Thyroid / Parathyroid.
Neck lump / Rhinoplasty.
Throat cancer / Head and neck cancer.
Larynx / Voice.
Parotid / Tonsils.
Noise induced hearing loss.
Whiplash / Tinnitus.
Nasal trauma / Septoplasty.
Salivary gland / Submandibular.