Abstract: Objective To observe and analyze the chest CT imaging characteristics of acquired immune deficiency syndrome(AIDS) combined with Candida infection, improving diagnostic level of AIDS combined with Candida infection. Methods 16 AIDS complicated with pulmonary candida infection diagnosed by fiberoptic bronchoscopy alveolar lavage fluid smear or culture were collected from December 2015 to July 2020 in Beijing Ditan Hospital, Capital Medical University. 13 cases underwent chest CT scan and 3 cases chest CT plain scan and enhanced scan, observe and analysis its CT image characteristics. Results ①The most common CT feature in pulmonary Candida infection with AIDS is patchy, large, or mass-like consolidation with surrounding "halo sign", which is more common under the pleura. ②The solid nodules with clear boundary occurs in pulmonary Candida infection, while the cavities in the nodules are rare. ③There are bronchiole and small blood vessels can be seen inside the mass-like Candida infection. The bronchiole wall is not thick, the lumen is not narrow, and the small blood vessels have no thrombosis or lumen obstruction performance. ④A very small number of patients with confirmed Candida infection have no positive findings in the lungs. Conclusion The most common imaging feature of AIDS complicated with pulmonary Candida infection is subpleural consolidation. Multiple solid nodules with cavities in the lungs are helpful for diagnosis. Study and analyze of the imaging performance of lung Candida albicans can help improve the level of diagnosis with this disease in physicians.

Key words: Acquired immunodeficiency syndrome, Pulmonary candida infection, Computed tomography