title: Choroidal calcification in Bartter syndrome.
abstract: OBJECTIVE
  Bartter syndrome is characterized by hyperplasia of the renal juxtaglomerular apparatus, hyperaldosteronism, and hypokalemic alkalosis. We report a case of Bartter syndrome associated with normal serum calcium levels and posterior choroidal calcification.
  
  
  METHODS
  Case report. A 59-year-old man with bilateral cataract and Bartter syndrome underwent a complete ophthalmic examination, including standardized echography before and after cataract surgery.
  
  
  RESULTS
  Before cataract surgery, echography identified small, hyperreflective, multifocal, bilateral choroidal lesions with posterior shadowing. After surgery, these lesions appeared as yellow-white, barely elevated plaques with smooth edges and were diagnosed as choroidal calcification.
  
  
  CONCLUSIONS
  Choroidal calcification may occur in patients with Bartter syndrome. This condition should be added to the differential diagnosis of posterior segment calcification.
authors.affiliation: Department of Ophthalmology, University of Verona, Italy. barbagio@hotmail.com
authors.forename: G
authors.initials: G
authors.lastname: Marchini
authors.forename: R
authors.initials: R
authors.lastname: Tosi
authors.forename: B
authors.initials: B
authors.lastname: Parolini
authors.forename: G
authors.initials: G
authors.lastname: Castagna
authors.forename: M
authors.initials: M
authors.lastname: Zarbin
mesh_terms: D001477:Bartter Syndrome / Q000097:blood / Q000150:complications*; D002114:Calcinosis / Q000097:blood / Q000150:complications* / Q000000981:diagnostic imaging; D002118:Calcium / Q000097:blood; D002386:Cataract / Q000150:complications; D002387:Cataract Extraction; D015862:Choroid Diseases / Q000097:blood / Q000150:complications* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005654:Fundus Oculi; D006801:Humans; D019654:Lens Implantation, Intraocular; D008274:Magnesium / Q000097:blood; D008297:Male; D008875:Middle Aged; D013577:Syndrome; D014463:Ultrasonography; D014792:Visual Acuity
chemical_list: D008274:Magnesium; D002118:Calcium