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The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
shows a silhouette sign ... anteriorly in the left lung ... caused by Sterptococcus ... #Clinical #Radiology ... #CXR #Pneumonia
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... Mycobacterium tuberculosis ... • CT: Halo sign ... Tuberculosis Pneumonia ... #differential #diagnosis
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Reversed Halo Sign ... • Infectious Causes ... Legionellosis, Tuberculosis ... Non-Infectious Causes ... Dermatomyositis, Lung
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
complex • Nodular/Masses ... Actinomyces spp., NHL; Lung ... Pyogenic bacterial pneumonia ... #differential #diagnosis ... #chestCT #radiology
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
In the proper clinical ... weight loss or long ... caused by Streptcoccus ... #Clinical #Radiology ... #CXR #AirBronchogram
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
: • Endogenous ... characteristic features Clinical ... Diagnosis: Latent ... and Culture • CXR ... #TB #Diagnosis
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
: • Endogenous ... characteristic features Clinical ... Diagnosis: Latent ... and Culture • CXR ... #TB #Diagnosis
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Unknown • 6-7 cases ... - Clinical manifestations ... - Imaging: • CXR ... - Diagnosis: ... pulmonary #ILD #diagnosis
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
throughout the lungs ... Mycobacterium: Tuberculosis ... rarely typical pneumonia ... #pulmonary #CXR ... #clinical #CT
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
Tree in Bud Sign ... The Tree-in-Bud sign ... bacterial/viral/fungal pneumonia ... #diagnosis #clinical ... #radiology #ChestCT