Oral lichenoid lesion in association with chemotherapy treatment for non-Hodgkin lymphoma or lichen planus? Review of the literature and report of two challenging cases oleh Letícia Côgo Marques, Laiza Angela de Medeiros Nunes da Silva, Pâmella de Pinho Montovani Santos, Amanda de Almeida Lima Borba Lopes, Karin Soares Cunha, Adrianna Milagres, Rafaela Elvira Rozza-de-Menezes, Arley Silva Junior, Danielle Castex Conde