Analysis of the Long-term Effect of Intraoperative Ra- diotherapy (IORT) for Non-Small Cell Lung Carcinoma (NSCLC)

OBJECTIVE To analyze the long-term effects of treatment with an op-eration + postoperative irradiation (A group) and an operation+intraoperative radiotherapy+postoperative irradiation (B group) in non-small cell lung cancer patients. METHODS Through a prospective randomized clinical trial, a total of 154 patients with non-small cell lung carcinoma were divided into two groups of 77 cases. Among the 154 cases, there were 134 squamous carcinomas, 17 adenocarcinomas and 3 adeno-squamous carcinomas. TNM staging: there were 17 in Stage, 76 in Stage and 61 in Stage . A dosage of 15~25 Gy IORT, energy 9~16 MeV electrons, was delivered to the tumors. The doses given were 40~60 Gy postoperation. RESULTS The local control rates in A and B groups were 49.4 % and 62.3 % respectively (P<0.05). The survivals at 3, 5 and 7 years for group A were 40.3%, 27.3%, and 5.2 % and for group B 44.2%, 28.6 % and 6.5% (P>0.05). There were 16 deaths from radiotherapy complications, with 2 cases in group A and 14 in group B. CONCLUSION IORT+postoperative irradiation can enhance the local control rate of non-small cell lung cancer patients and reduce the recurrent rates, but it can not improve long-term survival