Objective  To investigate the effect of different sexual behaviors on indicators of pulmonary infection and pulmonary CT imaging for Acquired Immunodeficiency Syndrome (AIDS) patients firstly diagnosed by respiratory symptoms.

  Methods  A total of 51 patients visiting the doctors for pulmonary symptoms and confirmed as AIDS in our hospital were selected in the study, and were divided into male-male sexual behavior group(n=17) and male-female sexual behavior group(n=34) according to the differed sexual behavioral histories. The oxygen partial pressure, erythrocyte sedimentation rate(ESR), procalcitonin(PCT), C reactive protein(CRP), main clinical symptoms and lung lesions by CT imaging were compared between the two groups.

  Results  The symptoms such as cough, fever, chest tightness, and PCT and ESR levels showed no statistically significant differences in male-male sexual behavior group and male-female sexual behavior group(P>0.05), while the CRP level and rate of lateral lung lesion in the male-male sexual behavior group than that in lower male-female sexual behavior group (P < 0.05).

  Conclusion  Different history of sexual behaviors has certain predictive value for supplementary examination for lung infection. Male patients with homosexual behaviors have a lower incidence of systemic inflammatory infection, and more likely occur a higher incidence of unilateral lung lesions, which is of great significance in further enriching the lung treatments of AIDS patients.