Lattice-like pattern

A 17-year-old girl consulted for an acral melanocytic lesion on her left toe.



Dermoscopy revealed a lattice-like pattern in favor of a benign acral melanocytic nevus.

Lattice-like pattern is a subtype of parallel furrow pattern.
It is more often localized on arch areas at the difference of fibrillar pattern which is observed more frequently on pressure areas.

On this figure above, the lattice-like pattern corresponds to the longitudinal and transversal thicker lines and the white circles symbolize eccrine pores.

Other cases of acral nevi:

1  2  3  4  5  6  7  8  9  10  11  

Acral melanocytic nevus

A 39-year-old woman (phototype V) noticed a pigmented lesion on her 5th left toe.
Dermoscopy revealed a uniform black homogeneous pattern with whitish dots (eccrine pores) and some streaks.
The lesion was excised and pathology revealed a compound melanocytic nevus.

Other cases of acral nevi:

1  2  3  4  5  6  7  8  9  10  11