[Prevalence of oral lichen planus and oral leukoplakia in 112 patients with oral squamous cell carcinoma].

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).

MATERIALS AND

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.