[Radiation recall pneumonitis induced by Gefitinib (Iressa): a case report].

Gefitinib is a newly developed molecular-target drug with selective inhibitory activity for tyrosine kinase of the epidermal growth factor receptor and has an encouraging effect on non-small cell lung cancer in an advanced stage. The adverse drug reactions including diarrhea, skin eruptions and liver dysfunction have been considered mild. However, cases of severe acute lung injuries were reported after approval of the drug in Japan in July, 2002. We report a case of recurrent large cell carcinoma of the lung in a 73-year-old man who suffered from radiation recall pneumonitis induced by Gefitinib. Two months after radiation therapy to the mediastinal and right hilar lesions was completed, he started to take Gefitinib at a dose of 250 mg/day. Six weeks later, he complained acutely of a dry cough, slight fever and effort dyspnea, and his chest CT demonstrated ground-glass opacity corresponding to the previous radiation field. In administering Gefitinib, as well as other cytotoxic drugs, meticulous monitoring for acute lung injury and radiation recall reaction is required.