title: Sialolithiasis: the radiolucent ones.
abstract: Radiolucent calculi are discussed. Three cases are presented, with a sialographic interpretation of each. Recent studies show that radiolucent calculi in general and parotid gland sialolithiasis in particular occur more frequently than was previously believed.
mesh_terms: D000328:Adult; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008875:Middle Aged; D010306:Parotid Gland / Q000000981:diagnostic imaging; D012465:Salivary Duct Calculi / Q000000981:diagnostic imaging*; D012793:Sialadenitis / Q000000981:diagnostic imaging; D012796:Sialography; D013363:Submandibular Gland / Q000000981:diagnostic imaging