Azo Pigments and a Basal Cell Carcinoma at the Thumb

@article{Engel2007AzoPA,
  title={Azo Pigments and a Basal Cell Carcinoma at the Thumb},
  author={Eva Engel and Heidi Ulrich and Rudolf Vasold and Burkhard K{\"o}nig and M{\'i}chael Landthaler and Rudolf S{\"u}ttinger and Wolfgang B{\"a}umler},
  journal={Dermatology},
  year={2007},
  volume={216},
  pages={76 - 80}
}
Basal cell carcinoma is the most common malignant neoplasm of the skin, whereas the localization at the nail unit is very rare. We report the case of a 58-year-old patient with a periungual basal cell carcinoma at the thumb. The specific feature of the reported case is the frequent exposure to fishing baits that the patient had stained with an unknown colorant. The use of chromatography, mass spectrometry and infrared spectroscopy revealed the colorant as the azo pigment Solvent Red 8. Solvent… Expand
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