Unfortunately, relapses occur in all patients and responses to second-line chemotherapy have proven to be of short term. Until recently, there were no registered drugs for treatment of relapsing SCLC. Phase II studies with docetaxel in first line - and second line treatment of SCLC demonstrated that docetaxel is an active agent in these patient groups. Therefore docetaxel seems suitable for evaluation in combination with other cytotoxic drugs active in this disease. Until now no studies have been performed with a combination of docetaxel and platinum in this group of previously treated SCLC patients.