TORS is the pneumonic for trans-oral robotic surgery. It is a minimally invasive approach, carried out through the mouth, using surgeon controlled robotic arms. Various 5 mm and 8 mm instruments and a 3-D HD camera arm allow for surgical dissection, bleeding control, and suture or flap repair, if necessary.
The cancers of oropharynx (base of tongue, tonsil, etc), hypopharynx and supra-glottic larynx are the ones which benefit from this surgery.