Correlation of lichen planus-like keratosis

From dermoscopedia

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 Editor: Oriol Yélamos

Description This chapter describes the correlation of lichen planus-like keratosis
Author(s) Oriol Yélamos · Ralph P. Braun
Responsible author Oriol Yélamos→ send e-mail
Status unknown
Status update January 1, 2019
Status by Ralph P. Braun

LPLK appears to be an inflammatory process originating from regression of a solar lentigo or a SK. Diffuse gray dots are multiple grayish round structures and are common in LPLK. Histologically, they correspond to melanophages in the papillary dermis and reveal a final stage in the regression process of an LPLK (Watanabe et al., 2016). Dermoscopy of LPLK can also show pinkish areas, an annular/granular pattern or a gray pseudonetwork (Watanabe et al., 2016). These patterns correlate with evolving stages of inflammation/regression: capillary dilatation and lichenoid inflammation, melanophages surrounding the hair follicles and aggregates of melanophages in papillary dermis, respectively (Watanabe et al., 2016).