Pulmonary Edema Caused by Levofolinate Treatment in Patients with Liver Metastases from Colorectal Cancer

摘要

A liver tumor metastatic from a sigmoid colon carcinoma was diagnosed in a 70-year-old man. Because hepatectomy was not indicated, the patient was treated with a combination of oxaliplatin, levofolinate, and fluorouracil (5-FU) (modified FOLFOX 6 regimen). After 15 cycles of chemotherapy, this regimen was considered to have been ineffective; therefore, treatment was started with the topoisomerase inhibitor irinotecan and an intravenous infusion of 5-FU and levofolinate (FOLFIRI). After receiving irinotecan and levofolinate, the patient had chills, a severe cough, and dyspnea. We diagnosed pulmonary edema as a side effect due to oxaliplatin, and the chemotherapeutic regimen was changed from FOLFIRI to FOLFOX plus bevacizumab. After the third cycle of oxaliplatin and levofolinate, pulmonary edema recurred, and a preshock state developed again. We suspected that either oxaliplatin or irinotecan had caused the pulmonary edema and, therefore, administered levofolinate, 200 mg/m2; 5-FU, 400 mg/m2; and bevacizumab, 330 mg/m2; intravenously on day 1, followed by 5-FU, 2,400 mg/m2, as a continuous intravenous infusion at 46 hours without either of oxaliplatin, levofolanate, and bevacizumab. After being treated with levofolinate again, the patient suddenly complained of severe dyspnea; this symptom confirmed that levofolinate had caused the pulmonary edema. To our knowledge, severe pulmonary edema caused by levofolinate has not been reported previously. This adverse effect was clinically significant because it led to the patient's death.