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Histopathologic features seen with radiation recall or enhancement eruptions
Kathleen J Smith1, Marguerite Germain, Henry Skelton
1Department of Dermatology and Pathology, University of Alabama, Birmingham, Alabama 35249, USA. ksmith@path.uab.edu
Journal of Cutaneous Medicine and Surgery
|October 4, 2002
Summary
This study defines the histologic features of radiation recall and enhancement eruptions, linking them to chemotherapeutic agents and radiation therapy. Findings suggest oxidative stress and mitochondrial dysfunction play roles, with antioxidants potentially aiding prevention.
Area of Science:
- Dermatology
- Oncology
- Pathology
Background:
- Radiation recall and enhancement eruptions are known side effects of chemotherapy.
- Histologic features of these reactions are infrequently described.
Purpose of the Study:
- To define the histologic characteristics of radiation recall and enhancement eruptions.
- To elucidate the pathogenesis of these chemotherapy-induced skin reactions.
Main Methods:
- Analysis of skin biopsy specimens from ten patients experiencing eruptions at radiation therapy sites.
- Histologic examination and immunohistochemical staining for p53.
Main Results:
- Eruptions presented as maculopapular to psoriasiform, often with follicular pustules.
- Histology revealed epidermal dysplasia, keratinocyte necrosis, increased mitoses, and dermal changes like fibrosis and elastosis.
- Antibiotic chemotherapeutic agents were the most common drug class involved.
Conclusions:
- Oxidative stress and mitochondrial dysfunction are likely key factors in radiation recall/enhancement eruptions.
- While p53 mutations may contribute, they are not considered a major factor.
- Nutritional support and antioxidant therapy may help prevent these reactions.