HRCT findings | Clinical circumstance | Organism |
Lobar consolidation | Community-acquired AIDS CD4>200 cells·mm3 | S. pneumoniae 2 of 3 of community acquired pneumonias |
Mild immunosuppression Diabetes Alcoholism COPD | Semi-invasive aspergillosis | |
Solid organ transplantation | Gramnegative bacilli Staphylococcus | |
Ground-glass opacity | AIDS CD450-75 cells·mm3 | Pneumocystis carinii pneumonia |
Bone marrow transplant | CMV | |
Bronchopneumonia | Neutropenia | Bronchial invasive aspergillosis |
Interstitial pneumonia | Bone marrow transplant | CMV |
AIDS | Pneumocystis carinii pneumonia | |
Multiples small nodules | Bone marrow transplant | CMV |
AIDS | Cryptococcosis, Varicella, Herpes | |
Multiple cavitary nodules | Drug addict | S. aureus |
“Halo sign” | Neutropenia | Angioinvasive aspergillosis |
“Tree-in-bud” | AIDS CD4>200 cells·mm3 Transplantation | Bronchial infection Endobronchial spread of tuberculosis Aspergillosis |
Lymphadenopathy | AIDS CD4<50 cells·mm3 | M. tuberculosis |
AIDS: acquired immune deficiency syndrome
COPD: chronic obstructive pulmonary disease
S. pneumoniae:Streptococcus pneumoniae
CMV: cytomegalovirus
S. aureus: Staphylococcus aureus
M. tuberculosis: Mycobacterium tuberculosis
HRCT: high-resolution computed tomography