LEGENDS
Table 1. Comparison of demographic features between patients with malignant and non-malignant lesions. Information on s moking status (cigarettes per day and years smoking) and age in different types of vascular classification is also provides.
Table 2. Smoking status (cigarettes per day and years smoking) and age in different types of vascular classification.
Table 3 . Smoking status (cigarettes per day and years smoking) and age in different types of morphological classification. The meanings of the abbreviations are the following: fs = Flat and smooth type: Surface: smooth; Margin: lesion without raised margins, being continuous with the surrounding mucosa; Texture: homogeneous, regular, the lesion with even coloration; es=elevated and smooth type: Surface: smooth; Margin: lesion with raised margins, sharply demarcated from the surrounding mucosa; Texture: homogeneous, regular, the lesion with even coloration; r = Rough type.
Images 1, 2 and 3. The figures depict type I, II and III patterns of vascularization correspondingly. In type I, the intraepithelial papillary capillary loops are almost invisible; oblique and arborescent vessels of small diameter can be clearly seen. In type II, the intraepithelial papillary capillary loops are also almost invisible, but the diameter of the clearly observed oblique and arborescent vessels is enlarged. In type III, the mucosa is whitish and the intraepithelial papillary capillary loops cannot be seen; if the whitish patch is thin, the oblique and arborescent vessels may be seen indistinctly, but if the whitish patch is thick the vessels will be obscured.