Imatinib-induced lichen planus and lichenoid drug eruption: A report of three cases.

Cutaneous adverse effects of imatinib are common and well documented in the literature. However, imatinib-induced lichen planus is an uncommon side effect with only four reported cases. In addition, reactivation of hepatitis B is an extremely rare association. We report two cases of imatinib-induced lichen planus, one of which is associated with hepatitis B reactivation, and one case of lichenoid eruption caused by imatinib. The aim of our report is to make physicians aware of this rare association between lichen planus and imatinib. We also recommend screening for hepatitis B virus before starting treatment with imatinib to avoid serious complications.