Vulva

Question 1

Usual type VIN

Answer 1

VIN 2-3 associated with HPV
HSIL VIN
Premalignant
Accounts for up to 70% of premalignant vulvar lesions

Question 2

Differentiated type VIN

Answer 2

dVIN
Associated with vulvar dermatoses, especially lichen sclerosus
Premalignant
More likely to progress to invasive carcinoma
80% vulvar cancers arise from dVIN

Question 3

VIN1

Answer 3

HPV-associated warty changes, LSIL, flat condyloma

Benign