title: Pseudoephedrine and guaifenesin urolithiasis: widening the differential diagnosis of radiolucent calculi on abdominal radiograph.
abstract: Unenhanced helical computed tomography has played an increasingly important role in the management of urinary tract stones, guiding diagnosis and control of calculus disease. We report computed tomographic and radiographic appearances of a renal calculus composed of pseudoephedrine and guaifenesin in a patient who abused over-the-counter allergy medication.
authors.affiliation: Department of Radiology, University of Alabama at Birmingham, 619 19th Street, South, Birmingham, AL 35249-6830, USA.
authors.forename: G Y
authors.initials: GY
authors.lastname: Song
authors.forename: M E
authors.initials: ME
authors.lastname: Lockhart
authors.forename: J K
authors.initials: JK
authors.lastname: Smith
authors.forename: J R
authors.initials: JR
authors.lastname: Burns
authors.forename: P J
authors.initials: PJ
authors.lastname: Kenney
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004809:Ephedrine / Q000633:toxicity*; D006140:Guaifenesin / Q000633:toxicity*; D006801:Humans; D008297:Male; D036542:Tomography, Spiral Computed; D014545:Urinary Calculi / Q000139:chemically induced* / Q000000981:diagnostic imaging*
chemical_list: D006140:Guaifenesin; D004809:Ephedrine