title: Significance of a "lump in the neck".
mesh_terms: D001845:Bone Cysts / Q000175:diagnosis; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D008206:Lymphatic Diseases / Q000175:diagnosis*; D008207:Lymphatic Metastasis; D008722:Methods; D010307:Parotid Neoplasms / Q000175:diagnosis; D013964:Thyroid Neoplasms / Q000175:diagnosis