title: [Clinical analysis of 193 patients with thickening and nodular port wine stains].
abstract: OBJECTIVE
  The purpose of this study is to investigate the relation between age, gender and thickening and nodules in port wine stains(PWS) patients.
  
  
  METHODS
  The gender and age of 193 cases with port wine stains were compared between those with flat, those with thickening, those with thickening and nodules, in 0-19, 20-year age group. SAS6012 software package was used for Fisher's exact test and Kruskal-Wallis test.
  
  
  RESULTS
  There were 165 cases with flat (85.49%), 10 cases with thickening (5.18%), 18 cases with thickening and nodules (9.33%). Kruskal-Wallis test demonstrated significant difference between 2 age groups(P<0.01).There was an increase incidence of thickening, and thickening and nodule formation in 0-19, 20-year age group(P<0.01), but there was no gender difference between thickening and nodules.The data were analyzed by SAS6.12 Fisher's exact test and Kruskal-Wallis test.
  
  
  CONCLUSIONS
  The incidence of thickening and nodule formation in PWS increase with age.
authors.affiliation: Department of Stomatology, Lishui People's Hospital, Hospital of Stomatology. Lishui 323000, Zhejiang Province, China. tiankebin8888@yahoo.com
authors.forename: Ke-Bin
authors.initials: KB
authors.lastname: Tian
authors.forename: Tong-Hai
authors.initials: TH
authors.lastname: Fan
authors.forename: Ling-Yue
authors.initials: LY
authors.lastname: Shen
authors.forename: Yin-Hua
authors.initials: YH
authors.lastname: Jiang
authors.forename: Guo-Yu
authors.initials: GY
authors.lastname: Zhou
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D019339:Port-Wine Stain / Q000473:pathology*; D012737:Sex Factors; D055815:Young Adult