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Invasive breast carcinoma - IARC

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CHAPTER 6<br />

Tumours of the Vagina<br />

Although the incidence rate of vaginal intraepithelial neoplasia<br />

is increasing, that of squamous cell <strong>carcinoma</strong> is decreasing,<br />

reflecting earlier detection and more successful treatment.<br />

Human papillomavirus infection is a risk factor for both vaginal<br />

intraepithelial neoplasia and squamous cell <strong>carcinoma</strong>.<br />

In past decades, clear cell adeno<strong>carcinoma</strong> occurred in young<br />

women, about two-thirds of whom had been exposed transplacentally<br />

to diethylstilbestrol. At that time, it was the the most<br />

important glandular lesion of the vagina and the second most<br />

common epithelial malignancy. The precursor lesion appears<br />

to be atypical adenosis.<br />

The most important non-epithelial tumours are malignant<br />

melanoma and sarcoma botyoides.

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