Laryngeal dysplasia: aetiology and molecular biology

Laryngeal premalignancy is a common clinical concern. While tobacco has long been established as the principal identifiable aetiological factor, the last two decades have seen publications investigating a potential role for gastroesophageal reflux, gastrectomy and human papilloma virus. Furthermore, there have been major advances in our understanding of the molecular biology of cancer and premalignancy. Accompanying this increased understanding, significant efforts have been made to correlate the expression of molecular markers with the clinical course of premalignant laryngeal lesions. This review summarizes current knowledge of the aetiological factors and molecular biology of laryngeal premalignancy. All aetiological factors, including molecular markers, are discussed separately and their possible role in the clinical course of these lesions is discussed.