Complex sentence: Some Head and Neck, Otolaryngologists, and Oral and Maxillofacial surgeons will excise a tumor from the head and neck leaving a large tissue defect, and then use one of a variety of techniques to reconstruct the wound--often free flaps are needed.
Split into simpler sentences: Some Head and Neck, otolaryngologists and Oral and Maxillofacial surgeons will excise a tumor from the head and neck leaving a large tissue defect. The reconstructive surgeon will then use one of a variety of techniques to reconstruct the wound--often free flaps are needed.