title: Quartz stones: spurious or iatrogenic?
abstract: We describe 2 cases of spurious quartz-containing calculi; the first patient-driven and the second iatrogenic. An iatrogenic etiology can occur after the use of holmium:yttrium-aluminum-garnet laser energy because the fiber tip is composed of quartz. To make the diagnosis of a spurious stone, a high degree of suspicion is essential. A quartz stone should prompt the diagnosis of a factitious disorder in the absence of the appropriate surgical history. Psychological counseling and/or referral to a pain management clinic should be considered in such cases.
authors.affiliation: Department of Urology, New York University School of Medicine, New York, New York, USA.
authors.forename: Ojas
authors.initials: O
authors.lastname: Shah
authors.forename: Dean G
authors.initials: DG
authors.lastname: Assimos
mesh_terms: D019343:Citric Acid / Q000652:urine; D004868:Equipment Failure; D005162:Factitious Disorders / Q000175:diagnosis*; D021501:Flank Pain / Q000209:etiology*; D005547:Foreign Bodies / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D007049:Iatrogenic Disease; D008096:Lithotripsy; D017602:Lithotripsy, Laser / Q000009:adverse effects* / Q000295:instrumentation; D008297:Male; D008306:Malingering / Q000175:diagnosis*; D008875:Middle Aged; D009293:Opioid-Related Disorders / Q000150:complications* / Q000175:diagnosis; D011791:Quartz; D012008:Recurrence; D036542:Tomography, Spiral Computed; D014514:Ureteral Calculi / Q000209:etiology* / Q000628:therapy / Q000652:urine; D014545:Urinary Calculi / Q000737:chemistry / Q000175:diagnosis* / Q000209:etiology
chemical_list: D011791:Quartz; D019343:Citric Acid