title: The association of urolithiasis and androgenetic alopecia.
abstract: OBJECTIVE
  The objective of this study is to investigate whether patients with androgenetic alopecia were at risk in terms of urinary system stone disease.
  
  
  METHODS
  Patients with no baldness (Hamilton-Norwood Scala [HNS] stage I) were categorized as Group I, those with hair loss in the frontal region (HNS stages II, III, IIIa, and IVa) as Group II, those with hair loss in the vertex region (HNS stage III-vertex, V) as Group III and those with hair loss in both vertex and frontal regions (HNS stages IV, Va, VI, and VII) as Group IV. Patients in all groups were compared in terms of presence of stone, and the presence of any association between alopecia and urolithiasis, with common etiological risk factors, was investigated.
  
  
  RESULTS
  Three hundred and two male patients were included in the study. The presence of urolithiasis was detected in 28.9% of patients in Group I; 26.5% of Group II; 36.9% of Group III; and 44.4% of Group IV (p = 0.085). Among patients aged under 60, urinary stone disease was detected in 30.8% of patients in Group I; 26.4% of Group II; 41.2% of Group III; and 53.8% of Group IV (p = 0.001). In patients aged over 60, urolithiasis was detected in 12.5% of patients in Group I; 26.9% of Group II; 32.2% of Group III; and 37.8% of Group IV (p = 0.371).
  
  
  CONCLUSIONS
  We determined a significant correlation between vertex pattern and total alopecia with urolithiasis in patients younger than 60 years old.
authors.affiliation: a Department of Radiology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Mustafa
authors.initials: M
authors.lastname: Resorlu
authors.affiliation: b Department of Urology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Eyup Burak
authors.initials: EB
authors.lastname: Sancak
authors.affiliation: a Department of Radiology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Fatma
authors.initials: F
authors.lastname: Uysal
authors.affiliation: c Department of Radiology , Vefa Hospital , Manisa , Turkey , and.
authors.forename: Muhammet
authors.initials: M
authors.lastname: Arslan
authors.affiliation: d Department of Urology , Aksaray State Hospital , Aksaray , Turkey.
authors.forename: Akif
authors.initials: A
authors.lastname: Diri
authors.affiliation: a Department of Radiology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Gurhan
authors.initials: G
authors.lastname: Adam
authors.affiliation: b Department of Urology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Alpaslan
authors.initials: A
authors.lastname: Akbas
authors.affiliation: a Department of Radiology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Abdullah
authors.initials: A
authors.lastname: Sariyildirim
authors.affiliation: b Department of Urology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Murat Tolga
authors.initials: MT
authors.lastname: Gulpinar
authors.affiliation: b Department of Urology , Faculty of Medicine, Canakkale Onsekiz Mart University , Canakkale , Turkey .
authors.forename: Berkan
authors.initials: B
authors.lastname: Resorlu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000505:Alopecia / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014421:Turkey / Q000453:epidemiology; D052878:Urolithiasis / Q000453:epidemiology*
keywords: Androgenetic alopecia; ultrasound; urolithiasis