Neoadjuvant chemotherapy of stage III-A and B lung carcinoma using the PACCO regimen.

Previously, we reported an effective chemotherapeutic combination regimen for non-small cell lung carcinoma (NSCLC): cisplatinum, doxorubicin, cyclophosphamide, CCNU, and vincristine (PACCO). Forty-one patients with a diagnosis of NSCLC Stages III-A and III-B were entered into the protocol of neoadjuvant PACCO chemotherapy. Following two courses of chemotherapy, the patients were evaluated for surgical therapy. The overall response rate to the chemotherapy was 60%. Subsequently, 65% of the patients underwent surgical resection. The overall estimated median survival was 18 months. The survival of patients in III-A was 36 months and that of III-B was 18 months (95% confidence lower bounds for III-A: 8 months and for III-B: 13 months). There was one chemotherapy-related mortality but no surgical mortality. Neoadjuvant chemotherapy with PACCO regiment offers an alternative to chemoradiation therapy, without increasing the surgical mortality, and should be validated in a randomized clinical trial. For successful neoadjuvant chemotherapy of Stage III NSCLC, chemotherapy combination which would give a high response rate without significant side effects must be chosen.