Pneumocystis pneumonia in a patient with non-small cell lung cancer (NSCLC) treated with pemetrexed containing regimen.

Pneumocystis pneumonia is typically life-threatening in immunocompromised patients. It is relatively uncommon in patients with lung cancer. We report a case of pneumocystis pneumonia in a patient with advanced stage non-small cell lung cancer (NSCLC) following treatment with concurrent chemoradiation with a pemetrexed containing regimen. To our knowledge, this is the first report on pneumocystis pneumonia following administration of pemetrexed containing regimen.