A 71-year-old woman suffered from pronounced erosion of her nose after
soft X-ray therapy (total dose 28 Gy, half dose depth 10.5-11.5 mm).
5 weeks after the end of the irradiation no healing tendency was obser
ved. This unusual clinical course was caused by a simultaneously exist
ing pemphigus vulgaris that worsened after radiotherapy, presumably as
a consequence of the release of epidermal antigens. In this case it i
s improbable that the pemphigus was induced by the radiotherapy, as ha
s been reported on several occasions in the literature. However, this
possibility cannot be entirely excluded.