Question 48 (part 2) · LDEK · Precancerous lesions and neoplasms
Indicate what stage IV (L3, O1) leukoplakia means, according to van der Waal classification:
- A. size of lesion up to 3 cm, single lesion.
- B. size of lesion up to 2-4 cm, single lesion.
- C. size of lesion above 4 cm, dysplasia in histopathologic examination.
- D. size of lesion above 4 cm, grade 1 hyperkeratosis in histopathologic examination.
- E. multiple lesions of unspecified size, unspecified dysplasia.
Hint
Van der Waal's LP system combines lesion size (L1-L3) with histology (P0 or P1); the 'O1' in the English stem stands for P1.
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