Abstract
Rituximab, a chimeric anti-CD20 monoclonal antibody, is commonly being used to treat indolent and aggressive B-cell non-Hodgkin's lymphoma. Rituximab is considered a relatively safe drug, but recently, severe and fatal adverse effects related to this drug have been reported. In this regard, we report an 80-year-old patient with follicular grade 3 non-Hodgkin's lymphoma who developed a fatal interstitial pneumonitis related to treatment with a rituximab/CHOP (cyclophosphamide/doxorubicin/vincristine/prednisone) regimen. The pneumonitis was diagnosed on a routine midtreatment positron emission tomography/computed tomography scan when the patient was almost asymptomatic. Pulmonary deterioration occurred as the treatment with rituximab/CHOP was continued. In this article, we also review the literature on rituximab-associated pneumonitis, and we discuss the differential diagnosis with cyclophosphamide-induced lung injury.
Published Version
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