Acute Bleomycin and Methotrexate Toxicity: Report of Two Cases

Two clinical cases of acute and severe toxicity after bleomycin and methotrexate administration are described. In both cases toxicity became evident 2 to 3 days after chemotherapeutic treatment and consisted of ulceronecrotic mucositis, leuko- and thrombocytopenia and hypotension; one patient died 13 days after. Toxicity is quite unexpected in relation to the drug dosages and time of onset. Some pathogenetic hypotheses are discussed.