|photo taken by Dr. Yoon Cohen|
|1 month follow-up|
Question/Comment: The fact that this appeared shortly after surgery strongly suggests trauma rather than neoplasia. If the patient was anticoagulated during surgery, that would be one more helpful historical fact. The pattern of the long band could be called the "tadpole sign" -- I wonder if it is specific for subungual hematoma.
1. Precursors to melanoma and their mimics: nevi of special sites.
3. Overview of Nail Dermatoscopy