Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/124388
Title: Squamous intraepithelial lesions of the anal squamocolumnar junction: Histopathological classification and HPV genotyping
Author: Clavero, Omar
McCloskey, Jenny
Molina, Vicente Marco
Quirós, Beatriz
Bravo, Ignacio G.
Sanjosé Llongueras, Silvia de
Bosch José, Francesc Xavier, 1947-
Pimenoff, Ville Nikolai
Keywords: Epiteli
Papil·lomavirus
Epithelium
Papillomaviruses
Issue Date: 1-Jun-2017
Publisher: Elsevier Science
Abstract: Background: Human papillomavirus (HPV)-related anal cancer lesions are often found adjacent to the squamocolumnar junction (SCJ). We have assessed the histopathology and associated HPV genotypes in anal SCJ lesions in surgically excised anal warts in HIV-negative and -positive patients. Methods: Histopathology identified 47 squamous intraepithelial lesions (SILs) adjacent to the SCJ amongst a total of 145 cases of clinically diagnosed anal condylomata. The anal SCJ lesions were further analyzed with p16, CK7 and p63 immunohistochemistry and HPV genotyping. Results: Sixteen (16/47) of the excised anal wart lesions contained HSIL; Three were HSIL and exclusively associated with oncogenic HPVs. A further thirteen (13/47) were mixed lesions. Of these eight were HSILs with LSIL and six were HSILs with papillary immature metaplasia (PIM); Ten of the mixed lesions were associated with one or more oncogenic HPVs, while three cases were exclusively associated with HPV6. Conclusions: Clinically diagnosed anal warts cannot be assumed to be limited to low-grade lesions as anal warts of the SCJ often show heterogeneous lesions, with coexistence of LSIL, PIM, and HSIL. Lesions showing PIM, however, may mimic HSIL, because they are hypercellular, but lack the nuclear atypia and conspicuous mitotic activity of HSIL; and are p16 negative.
Note: Reproducció del document publicat a: https://doi.org/10.1016/j.pvr.2016.12.001
It is part of: Papillomavirus Research, 2017, vol. 3, p. 11-17
URI: http://hdl.handle.net/2445/124388
Related resource: https://doi.org/10.1016/j.pvr.2016.12.001
Appears in Collections:Articles publicats en revistes (Institut d'lnvestigació Biomèdica de Bellvitge (IDIBELL))

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