title: Parotid duct calculus.
mesh_terms: D002118:Calcium / Q000378:metabolism; D005260:Female; D006801:Humans; D008875:Middle Aged; D010306:Parotid Gland / Q000601:surgery*; D012465:Salivary Duct Calculi / Q000601:surgery*; D012796:Sialography
chemical_list: D002118:Calcium