Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSPDAHY, Flavia EsperPALHARES, Renata BasicASSONE, TatianeSMID, JerusaMOURA, Joao Victor Luisi deHAZIOT, Michel E. J.MARCUSSO, Rosa Maria N.OLIVEIRA, Augusto Cesar Penalva deCASSEB, Jorge2021-06-172021-06-172021REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO, v.63, article ID e35, 5p, 20210036-4665https://observatorio.fm.usp.br/handle/OPI/40647The human T cell lymphotropic virus type 1 (HTLV-1) is the first human retrovirus discovered. Since then, it has spread worldwide and is mainly associated with adult T cell leukemia/lymphoma (ATLL) and HTLV1-associated myelopathy (HAM). Its relationship, however, with other types of cancer is controversial. We describe the case of a patient presenting with small cells lung epidermoid carcinoma who had recently developed HAM, and a review of the literature related to these conditions. This is the first case of this type of lung cancer, the same of the first description in the literature, associated with HAM outside Japan.engopenAccessHTLV-1ATLLCancerNeoplasiaOncogenesisarticleCopyright INST MEDICINA TROPICAL SAO PAULO10.1590/S1678-9946202163035Infectious DiseasesParasitologyTropical Medicine1678-9946