title: Quiz page. Air-filled stones in the distal left ureter.
authors.affiliation: Division of Nephrology and Department of Pediatrics, Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Joshua
authors.initials: J
authors.lastname: Blinder
authors.forename: Thomas
authors.initials: T
authors.lastname: Kolon
authors.forename: Lisa
authors.initials: L
authors.lastname: States
authors.forename: Kevin
authors.initials: K
authors.lastname: Meyers
mesh_terms: D000388:Air; D003460:Crystallization; D004351:Drug Resistance; D016983:Enterococcus / Q000378:metabolism; D004926:Escherichia coli / Q000378:metabolism; D004927:Escherichia coli Infections / Q000150:complications*; D005285:Fermentation; D016908:Gram-Positive Bacterial Infections / Q000150:complications*; D006801:Humans; D006869:Hydronephrosis / Q000150:complications* / Q000151:congenital; D007223:Infant; D008297:Male; D014057:Tomography, X-Ray Computed; D014514:Ureteral Calculi / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy; D014517:Ureteral Obstruction / Q000150:complications; D014552:Urinary Tract Infections / Q000150:complications*