“…Blockade of TNF-α, however, is profoundly immuno suppressive, resulting in reactivation of tuberculosis and histoplasmosis, as well as the emergence of malignant lymphomas (3). In fact, some cases with MF manifested by treatment with TNF-α inhibitors have been reported (4)(5)(6)(7). We describe here a 60-year-old woman diagnosed with psoriasis who showed exacerbation of MF with large cell transformation during treatment with infliximab.…”