title: [Prevalence of oral lichen planus and oral leukoplakia in 112 patients with oral squamous cell carcinoma].
abstract: OBJECTIVE
  To study the association existing between precancerous conditions, like oral lichen planus and oral leukoplakia into 112 patients with oral squamous cell carcinoma (OSCC).
  
  
  METHODS
  We applied a protocol to 112 patients with OSCC in the "Servicio de Estomatología del Hospital General Universitario de Valencia". We made two groups: 1. patients with precancerous lesions and oral carcinoma, 2. patients with OSCC and no precancerous lesions.
  
  
  RESULTS
  The average age was 61.4 years, 85 of them being men and 27 women. The tongue and floor of the mouth were the most common locations. 33.6% of the tumours presented stage TNM I, most of them being histologically well differentiated and the 55.8% were ulcerated. We found differences between two groups of the patients regarding alcohol and tobacco habits, location, size and clinical stage and histological differentiation of the malignant lesions.
authors.affiliation: Servicio de Estomatología del HGU, Universidad de Valencia.
authors.forename: M C
authors.initials: MC
authors.lastname: Haya Fernández
authors.forename: J V
authors.initials: JV
authors.lastname: Bagán Sebastián
authors.forename: J
authors.initials: J
authors.lastname: Basterra Alegría
authors.forename: E
authors.initials: E
authors.lastname: Lloria de Miguel
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007972:Leukoplakia, Oral / Q000453:epidemiology* / Q000473:pathology*; D017676:Lichen Planus, Oral / Q000453:epidemiology* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000473:pathology*; D011230:Precancerous Conditions / Q000473:pathology*; D015995:Prevalence
vernacular_title: Prevalencia de liquen plano oral y leucoplasia oral en 112 pacientes con carcinoma oral de células escamosas.