[Characteristics and treatment of bone metastases in 322 cases non-small cell lung cancer: a retrospective study].

Background and objective Bone metastases are the most common metastases of the non-small cell lung cancer (NSCLC). It can lead to bone ache and pathology fracture, deteriorate the quality of life. Methods We retrospectively investigated the characteristics, diagnosis and prognosis factors of bone metastases in NSCLC. All of the 600 patients are from department of thoracic oncology in recently 5 years. Emission computed tomography (ECT) was used to screen the bone metastases and the diagnosis of bone metastases was confirmed by computed tomography (CT)/magnetic resonance imaging (MRI)/X-ray or pathology. Results Among the total 322 bone metastases patients, subtype of adenocarcinoma had the most opportunity to occur bone metastases, and we found that vertebrae, pelvis and femora et al were the most frequently involved metastases sites. Patients who had more than 3 high 18F-FDG uptake sites of ECT, could be confirmed bone metastases by CT/MRI/X-ray than those with 1-2 high 18F-FDG uptake sites [80.6% (203/252) vs 50.79% (32/63), P<0.001]. The patients with bone metastases who had non-SRE had longer survival than that of SRE [1-yr survival 44.75% (non-SRE) vs 36.17% (SRE); median survival 14.74 mo (non-SRE) vs 12.25 mo (SRE)]. Multivariables analysis showed the pathology were non-adnocarcinoma, bone metastases less than 3 sites and bone metastases without other organs metastases would have good prognosis. Conclusion There were relations between the numbers of abnormal dense sites of ECT and the diagnosis of skeletal metastases, non-adnocarcinoma bone metastases less than 3 sites and bone metastases without other organs metastases were the independent prognosis factors.. DOI: 10.3779/j.issn.1009-3419.2014.09.03