These 2 cases of seborrheic keratoses are dysplaying hairpin vessels:
Case 1: clinical view
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTBbFdlraBQSLCtl5sKYrUP_4j0JYKAVQqGv4e8D5encxZ1prFr-Hm10is5kt258Uve4_K2r5hb9epFN3VeJHTdjF6VpRZO_ieSbxYj5QUW5iaTHrFx4nvIhGglV_qkRkJvWUUnZgQdyE/s400/KS02.jpg)
Case 1: dermoscopic view: numerous hairpin blood vessels
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjfrPFjwyi0Oh-TITUmfF_7Z_k1BuYylSV417_m6jT12ak5O9tdYhWGHm1UtBSLQLMc0FdZ3olNRbQuY27Jf3CxEgRozPFE7_MBRlln-h_nLTKRLs5A99N8fgaYdHZ0ZD8dYzW1hNP5_7U/s400/KS03.jpg)
Case 2: dermoscopic view: rare hairpin vessels
Hairpin vessels can be found in:
- seborrheic keratoses (fine, often surrounded by a hypopigmented halo)
- Melanoma (irregular)
- Spitz nevi
- keratoacanthomas