All are premalignant conditions of oral cavity except:

All the given options increase the risk of carcinoma of oral cavity but, oral Lichen planus has the least risk as it is Low-risk or Equivocal lesion. Conditions associated with Malignant Transformation HIGH RISK LESIONS Medium-risk Lesions Low-risk or Equivocal Lesions Erythroplakia Speckled Erythroplakia Chronic Hyperplastic -Candidiasis Oral submucous fibrosis Syphilitic glossitis Sideropenic dysphagia (Paterson-Kelly syndrome) Oral Lichen Planus Discoid Lupus erythematous Discoid keratosis congenita Speckled Erythroplakia is also known as Erythroleucoplakia. Leucoplakia Malignancy: -Speckled Erythroplakia > Erythroplakia > Leucoplakia