title: Gradual enlargement of a retroauricular mass.
mesh_terms: D008949:Adenoma, Pleomorphic / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D000328:Adult; D001706:Biopsy; D002921:Cicatrix / Q000150:complications*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008417:Mastoiditis / Q000601:surgery*; D010306:Parotid Gland / Q000473:pathology; D010307:Parotid Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery