Copyright © 
--- 
--< Home---
--< CNMD---
-< Unifying Concept-- --< Step 2--- --< Pattern Analysis--- --< Back---
 

 



Special location:
Acral melanocytic lesions
 
    Absence of pigment network

Parallel pattern typified by different morphologic aspects. Criteria modified according to Saida et al. (Arch Dermatol 1995) and Oguchi et al. (Arch Dermatol 1998):

 

  Parallel-furrow pattern Pigmentation following the sulci superficiales. The most common dermoscopic pattern in acral melanocytic nevi

 

  Lattice-like pattern Pigmentation following and crossing the furrows in acral melanocytic nevi

 

  Fibrillar pattern Numerous, finely pigmented filaments perpendicular to the furrows in acral melanocytic nevi

 

  Parallel-ridge pattern Pigmentation aligned along the cristae superficiales. Commonly found in melanoma in situ and in early invasive melanomas of palms and soles

 

  Parallel-furrow pattern in an acral nevus

 

  Lattice-like pattern in an acral nevus

 

  Fibrillar pattern in an acral nevus

 

  Parallel-ridge pattern in a melanoma in situ