[Investigation of allergic reactions to platinum salts].

INTRODUCTION

We report two cases occurring in 2004 of patients being treated for pleural mesothelioma with a combination of cisplatin or carboplatin and pemetrexed. Investigation by skin tests and flow cytometry confirmed the clinical diagnosis in both cases.

CASE REPORTS

Case 1: a man of 62 developed, after 12 courses of cisplatin-pemetrexed, an anaphylactic reaction 5 minutes after the infusion of cisplatin. Treatment was withdrawn permanently. Case 2: a man of 66 developed, after 7 courses of cisplatin-pemetrexed, an anaphylactic reaction within the first minute of the infusion of cisplatin. Subsequently, in March 2004, he received pemetrexed alone without any problems. In August 2004 he was prescribed carboplatin-pemetrexed. Within 5 minutes he developed urticaria, pruritus and abdominal pain. He was treated later with pemetrexed alone with no problems.

CONCLUSION

Hypersensitivity to platinum salts usually occurs after several courses of treatment. Skin tests and flow cytometry are a simple, concordant, and reliable way of confirming the diagnosis.