Objective To study the effect of percutaneous CT-guided lung biopsy on the patients with peripheral lung focus.Methods Percutaneous CT-guided lung biopsy was performed in 38 patients with peripheral lung focus who were admitted to the Affiliated Hospital,Armed Police Medical College from Feb.2002 to Jan.2005.Results A total of 38 patients were studied,including 30 patients with lung cancer,2 patients with pulmonary tuberculosis,5 patients with benign pulmonary diseases and 1 patient with negative result.The positive rate was 97.36% in the 38 cases with a slight side effect.Conclusion This method is simple,safe and effective,and it is very important in diagnosis of patients with peripheral lung focus.

Objective To investigate the association of cylomegalovirus with atherosclerosis.Methods The presence of cylomegalovirus(CMV)nucleic acids was demonstrated in carotid and coronary arteries of patients with and without atherosclerosis by polymerase chain reaction(PCR).CMV was detected by PCR in the blood of patients with and without atherosclerosis.Results 83.3% - 86.7% of the samples obtained from atherosclerotic patient arterial walls were shown to contain viral nucleic acids(CMV),CMV could be found among 6.7% of patients' arterial wall without atherosclerosis,significant difference can be found between them(P ＜ 0.01).In blood CMV could be found in 42.4% of patients with atherosclerosis,in the control group,only 3% of samples had CMV,P＜0.01.Conclusion CMV plays an important role in the pathologic process of the atherosclerosis and the atherosclerotic cerebral infarction.