A 64 year old man with recurrent metastatic squamous cell carcinoma of the head and neck developed severe skin rash and bone marrow aplasia 4 and 7 days, respectively, following a single dose of 40 mg/m2 methotrexate (MTX).
severe skin rash
methotrexate
bone marrow aplasia
methotrexate
severe skin rash
MTX
bone marrow aplasia
MTX