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Arch Pathol Lab Med. 1991 Sep;115(9):895-9.

Verruca vulgaris of the larynx. Demonstration of human papillomavirus types 6/11 by in situ hybridization.

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  • 1Department of Pathology, Presbyterian University Hospital, Pittsburgh, PA 15213.


Verruca vulgaris of the larynx (VVL) is a distinctly uncommon lesion related to the human papillomavirus (HPV). The clinical and pathologic features of a case involving the true vocal cords of a 37-year-old woman are presented and compared with the seven cases previously reported in the English language literature. Papillomavirus capsid antigen was detected in the excised tissue on immunostaining, and viral particles were seen by electron microscopy. In situ hybridization with biotinylated DNA probes clearly demonstrated HPV types 6/11. To our knowledge, this is the first case of VVL in which the virus associated with VVL has been genotyped. The results were unexpected because verruca vulgaris of the skin, lips, and oral cavity is associated with HPV types 2 and 4. This implies that verruca vulgaris can be caused by HPV types other than 2 and 4. In addition, since HPV types 6 and 11 are also the same genotypes associated with multiple papillomatosis of the larynx, it further indicates that VVL is virologically more related to multiple papillomatosis of the larynx than to its counterpart on the skin, lips, and oral cavity. The clinical and pathologic features that distinguish VVL from other similar lesions of the larynx are also discussed.

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