A rare case of erythema dyschromicum perstans arising in the setting of a third-generation tyrosine kinase inhibitor

Figures & data

Figure 1. Patient’s bilateral upper outer arms and forearms with distinct, ill-defined, blue-gray pigmented macules and patches.

Figure 2. A punch biopsy of the right upper arm shows a subtle vacuolar interface with vacuolar changes and necrotic keratinocytes (black arrows). Perivascular inflammation is present and dermal melanophages (asterisks) are seen (Hematoxylin and Eosin, 400x).