Dermatoscopy has profoundly changed the practice of dermatology. We have learned a lot and there is much more to discover. A 30 yo woman was seen recently for a changing lesion on her abdomen. The dermatoscopic picture looked benign, but it was unusual.
Clinically, this looked like seborrheic keratosis, but the pattern was unusual. A biopsy was done to reassure the patient and so that we could learn something.
Later, we learned that she was using a self-tanner. The clods seen in the image above represent the chemical in the horn cysts. A similar pattern has been reported from hair dye. The reference is the only one we could locate on PubMed.
The biopsy confirmed that this was a seborrheic keratosis, No artifacts were seen, but they were probably washed out in processing,
Reference:
Colored dots on trichoscopy-beware of artifacts. J Am Acad Dermatol. 2019 Jun;80(6):e143-e144. PMID: 30529542
No comments:
Post a Comment
We welcome your comments. We endeavor to serve your patients and you. If you want us to respond, please add your name and email address. Some people have trouble uploading comments. In that case, please send comments directly to djelpern@gmail.com. Thank you.