Department of Radiology;
East Sussex Healthcare Trust;
Department of ENT Surgery;
East Sussex Healthcare Trust;
Department of Maxillofacial Surgery;
Royal Sussex County Brighton;
Department of Surgery;
Royal Free Hospital;
Parotid; Biopsy; Fine; needle; aspiration; Cytology; Mass; Fine; needle; aspiration; Cytology; Corebiopsy; Ultrasound; Diagnosis;