Vessels Lines Serpentine

Vessels Lines Serpentine

BCC 

Adnexal

Melanoma 

Vessels Lines Coiled

Vessels Lines Coiled

Bowens/ IEC 

CCA

Vessels Lines Helical

Vessels Lines Helical 

Mel Metastases

Vessels Polymorphous plus Dots

Polymorphous plus Dots 

Melanoma The greater the range of vessels you see in a pink lesion the more likely it is to be an amelanotic melanoma. The one below is arising in a congenital nevus. 

View the case below

Vessels Polymorphous no Dots

Polymorphous no Dots

BCC 

Seb K irritated 

Bowens/SCC \

LPLK 

Melanoma

Polymorphous Vessels Typically melanoma will show a collection of different vessel types and when two or more vascular patterns are seen in a lesion they are termed polymorphous. These can include dotted, curved, linear irregular, coiled or helical with dotted and linear irregular being the most frequent combination. The lesion pictured below is a 2.3 mm thick amelanotic nodular melanoma. The most striking feature of this lesion is the multitude of irregular blood vessels. There are linear irregular, glomerular and comma vessels present. 

View another example of polymorphous vessels in Dermoscopy Atlas

View this Video on Kittlerian Vessel Terminology