the Atlas of AIDS Co-infection illustrates imaging features and clinical outcomes of AIDS related diseases. The common/uncommon opportunistic infections and malignancies are well covered, including bacterial (e.g. Staphylococcus, Rhodococcus equi), fungal (e.g. Penicillium marneffei, Pneumocystis pneumonia, Pulmonary aspergillosis, Mucormycosis) and mycobacterial infections (Mycobacterium tuberculosis, Non-tuberculous Mycobacteria), lymphoma, as well as AIDS related disease in children with AIDS. Excellent photographs (X-ray and CT imaging) reveal the common imaging features of different diseases in different stages of treatment. Co-infections are common in the late stage of AIDS, consistent with considerable overlap of CT findings that are displayed in one single section and some of the cases in several sections. At last, there are excellent descriptions of differential diagnosis based on the same appearance (e.g. diffuse pulmonary miliary nodules, mediastinal and abdominal lymphadenopathy). Learning variety of different imaging will enrich the radiologists experience and knowledge about AIDS-related diseases, and also help clinicians making timely diagnosis and appropriate optimal treatment. It belongs in the library of each Radiologist, HIV expert and all of who care about Infectious Diseases.