Oral leukoplakia, the best-known premalignant oral lesion, is defined as "a white patch or plaque that cannot be characterized clinically or pathologically as any other disease." Analogous red lesions are called erythroplakia, and combined red and white lesions are also known as speckled leukoplakia or erythroleukoplakia.
Truman BI, Gooch BF, Sulemana I, Gift HC, Horowitz AM, Evans CA, et al. Reviews of evidence on interventions to prevent dental caries, oral and pharyngeal cancers, and sports-related craniofacial injuries. Am J Prev Med 2002;23:21-54.
Neville BW, Day TA. Oral cancer and precancerous lesions. Ca: a Cancer Journal for Clinicians. 2002;52(4):195-215.
Lodi G, Sardella A. Bez C, et al. Interventions for treating oral leukoplakia. Cochrane Database of Systematic Review. 2006; 18(4): CD001829.
Speight PM, Khurram SA, Kujan O. Oral potentially malignant disorders: risk of progression to malignancy. Oral Surg Oral Med Oral Pathol Oral Radiol. 2018; 125(6): 612-627.