[Metastasizing squamous cell carcinoma in patients with psoriasis treated with immunosuppressive agents]

Immunosuppressive agents are imployed increasingly frequently in treatment of nonfatal disorders. We report two cases of metastasizing squamous cell carcinoma after treatment for psoriasis with methotrexate. Additional cases must be reported, but we consider that: 1) methotrexate medication, when possible, should be withdrawn when a localized squamous cell carcinoma is diagnosed and 2) when this diagnosis is confirmed the patient should be referred for radical treatment.