Factors categories Score Definition
Hyperemia Absence 0 There is no erythema or increased vascularity on or around the leukoplakia
Presence 4 Mucosal erythema or increased vascularity can be seen on or around the leukoplakia
Anterior commissura Without invasion 0 The leukoplakia is limited to one vocal cord and do not reach the anterior commissure.
Invasion 2 The vocal cord leukoplakia extends to the anterior commissure.
Thickness Thin 0 The leukoplakia is thin, and blood vessels beneath the lesion are visible.
Thick 2 The leukoplakia is obviously higher than the vocal cord surface, and blood vessels beneath the lesion are invisible.
Size Small 0 The extent of leukoplakia is less than half of one vocal cord.
Large 1 The extent of leukoplakia is more than half of one vocal cord.
Texture Regular 0 The surface of vocal cord leukoplakia is smooth, flat, and homogeneous.
Irregular 1 The surface of vocal cord leukoplakia is uneven, rough, and non-homogeneous.