title: [Epidemiological study on urinary stones in the region of Fez and the risk of recurrence].
abstract: OBJECTIVE
  In Morocco, few works on morpho-constitutional analysis of urinary calculi have been published, especially for patients in the region of Fez. This work aims to make a retrospective epidemiological study on the nature of urinary calculi with patients from the region of Fez and control the urine of the same patients after a period of three months to report on the risk of recurrence.
  
  
  METHODS
  Urinary stones were collected mostly in the nephrology service and urology service at the Hassan II Hospital in Fez. These calculations after being dried for 24 hours at room temperature underwent a morphological analysis, followed by infrared spectroscopic analysis Fourier transform. After a period of about three months, morning urine of the same patients was analyzed by crystalluria to control the presence of crystals that reflect a risk of recurrence.
  
  
  RESULTS
  In our series of 123 samples, the age of patients ranges from 2-79 years. The prevalence was higher for men with a sex ratio of 1.3. The results of the analysis calculations showed that 61% were formed of calcium oxalate and 15% of uric acid and 25% of stones were carbapatite, struvite, cystine… The study by crystalluria urine revealed the presence of the crystals in 69% of patients' nephrolithiasis.
  
  
  CONCLUSIONS
  The results of our study are conformed to the series of results in other regions of Morocco regarding the predominance of calcium oxalate stones. The presence of crystals in the urine of 69% of patients may indicate other recurrences.
  
  
  METHODS
  4.
authors.affiliation: Laboratoire de génie des matériaux et de l'environnement, faculté des sciences Dhar Mahraz, université Sidi Mohamed Ben Abdallah, Fès, Maroc. Electronic address: radouane500@gmail.com.
authors.forename: R
authors.initials: R
authors.lastname: El Habbani
authors.affiliation: Laboratoire de génie des matériaux et de l'environnement, faculté des sciences Dhar Mahraz, université Sidi Mohamed Ben Abdallah, Fès, Maroc.
authors.forename: A
authors.initials: A
authors.lastname: Chaqroune
authors.affiliation: Service de néphrologie, centre hospitalier universitaire Hassan II, Fès, Maroc.
authors.forename: T
authors.initials: T
authors.lastname: Sqalli Houssaini
authors.affiliation: Service de néphrologie, centre hospitalier universitaire Hassan II, Fès, Maroc.
authors.forename: M
authors.initials: M
authors.lastname: Arrayhani
authors.affiliation: Service d'urologie, centre hospitalier universitaire Hassan II, Fès, Maroc.
authors.forename: J
authors.initials: J
authors.lastname: El Ammari
authors.affiliation: Service de néphrologie, centre hospitalier universitaire Hassan II, Fès, Maroc.
authors.forename: F
authors.initials: F
authors.lastname: Dami
authors.affiliation: Service de néphrologie, centre hospitalier universitaire Hassan II, Fès, Maroc.
authors.forename: B A
authors.initials: BA
authors.lastname: Chouhani
authors.affiliation: Laboratoire de chimie, faculté de médecine et de pharmacie, Fès, Maroc.
authors.forename: A
authors.initials: A
authors.lastname: Lahrichi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001031:Apatites / Q000032:analysis; D002129:Calcium Oxalate / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D003553:Cystine / Q000032:analysis; D005260:Female; D006786:Hospitals, Urban; D006801:Humans; D008297:Male; D008875:Middle Aged; D009018:Morocco / Q000453:epidemiology; D015995:Prevalence; D012008:Recurrence; D012189:Retrospective Studies; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D014527:Uric Acid / Q000032:analysis*; D014545:Urinary Calculi / Q000737:chemistry* / Q000453:epidemiology*
chemical_list: D001031:Apatites; D002129:Calcium Oxalate; D014527:Uric Acid; D003553:Cystine; C030782:carboapatite
keywords: Bladder stones; Calcium oxalate; Calculs urinaires; Infrared spectroscopy; Lithiase urinaire; Oxalate de calcium; Recurrence; Récidive; Spectroscopie infrarouge; Urolithiasis