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Dermatopathologic effects of taxane therapy
Rebecca S Plummer1, Christopher R Shea1
1Section of Dermatology, Department of Medicine, University of Chicago, Chicago, Illinois.
Journal of the American Academy of Dermatology
|April 20, 2011
Summary
Taxane chemotherapy causes significant skin cell changes, mimicking malignancy in biopsies. Dermatopathologists must exercise caution when interpreting these taxane-induced histopathologic findings.
Area of Science:
- Oncology
- Dermatopathology
- Cell Biology
Background:
- Taxane drugs disrupt cell-cycle progression by impairing centrosomes, inducing abnormal spindles, and suppressing microtubule dynamics.
- These disruptions lead to aberrant mitosis or mitotic slippage, potentially triggering apoptosis in affected cells.
Observation:
- This study analyzed three benign skin biopsy specimens from patients undergoing taxane therapy (paclitaxel or docetaxel).
- Histopathologic examination focused on identifying characteristic changes induced by taxane treatment.
Findings:
- All examined specimens displayed numerous apoptotic and mitotic figures, including atypical forms, indicative of taxane's cytotoxic effects.
- One case initially suspected as malignant melanoma was reclassified as an atypical nevus.
- Other cases showed reactive epidermal hyperplasia and ecthyma alongside background taxane effects.
Implications:
- Taxane therapy induces profound cytopathic effects in skin biopsy specimens.
- These taxane-induced changes can be mistaken for malignancy, necessitating careful interpretation.
- Dermatopathologists require heightened awareness when evaluating skin biopsies from patients on taxane therapy to avoid misdiagnosis.
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