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Epidemiology: | Epidemiology: | ||
*Associated with [[lichen sclerosus]]. | *Associated with [[lichen sclerosus]]. | ||
*Seen in older women. | *Seen in older women - typically 50s-70s.<ref name=pmid19730361>{{Cite journal | last1 = Ordi | first1 = J. | last2 = Alejo | first2 = M. | last3 = Fusté | first3 = V. | last4 = Lloveras | first4 = B. | last5 = Del Pino | first5 = M. | last6 = Alonso | first6 = I. | last7 = Torné | first7 = A. | title = HPV-negative vulvar intraepithelial neoplasia (VIN) with basaloid histologic pattern: an unrecognized variant of simplex (differentiated) VIN. | journal = Am J Surg Pathol | volume = 33 | issue = 11 | pages = 1659-65 | month = Nov | year = 2009 | doi = 10.1097/PAS.0b013e3181b40081 | PMID = 19730361 }}</ref> | ||
*More common than ''[[classic VIN]]'' caused by HPV.<ref name=pmid21946295>{{Cite journal | last1 = Kokka | first1 = F. | last2 = Singh | first2 = N. | last3 = Faruqi | first3 = A. | last4 = Gibbon | first4 = K. | last5 = Rosenthal | first5 = AN. | title = Is differentiated vulval intraepithelial neoplasia the precursor lesion of human papillomavirus-negative vulval squamous cell carcinoma? | journal = Int J Gynecol Cancer | volume = 21 | issue = 7 | pages = 1297-305 | month = Oct | year = 2011 | doi = 10.1097/IGC.0b013e31822dbe26 | PMID = 21946295 }}</ref> | *More common than ''[[classic VIN]]'' caused by HPV.<ref name=pmid21946295>{{Cite journal | last1 = Kokka | first1 = F. | last2 = Singh | first2 = N. | last3 = Faruqi | first3 = A. | last4 = Gibbon | first4 = K. | last5 = Rosenthal | first5 = AN. | title = Is differentiated vulval intraepithelial neoplasia the precursor lesion of human papillomavirus-negative vulval squamous cell carcinoma? | journal = Int J Gynecol Cancer | volume = 21 | issue = 7 | pages = 1297-305 | month = Oct | year = 2011 | doi = 10.1097/IGC.0b013e31822dbe26 | PMID = 21946295 }}</ref> | ||
Note: | Note: | ||
*'''Not''' associated with [[HPV]].<ref name=pmid10716158>{{Cite journal | last1 = Yang | first1 = B. | last2 = Hart | first2 = WR. | title = Vulvar intraepithelial neoplasia of the simplex (differentiated) type: a clinicopathologic study including analysis of HPV and p53 expression. | journal = Am J Surg Pathol | volume = 24 | issue = 3 | pages = 429-41 | month = Mar | year = 2000 | doi = | PMID = 10716158 }}</ref> | *'''Not''' associated with [[HPV]].<ref name=pmid10716158>{{Cite journal | last1 = Yang | first1 = B. | last2 = Hart | first2 = WR. | title = Vulvar intraepithelial neoplasia of the simplex (differentiated) type: a clinicopathologic study including analysis of HPV and p53 expression. | journal = Am J Surg Pathol | volume = 24 | issue = 3 | pages = 429-41 | month = Mar | year = 2000 | doi = | PMID = 10716158 }}</ref> | ||
==Microscopic== | ==Microscopic== |
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