36 results
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
can suggest the diagnosis ... in the proper clinical ... feeding vessel sign ... feeding vessel sign ... #CXR #CTChest #
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... polymicrobial infection ... pneumonia • DM risk ... Pneumonitis 3. ... Lung Abscess - Clinical
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
failure, COPD, Lung ... lymphoid interstitial pneumonitis ... /- High res CT chest ... Diseases Fellows ... HIVAIDS #workup #diagnosis
Tuberculin Skin Test Interpretation - Threshold for treatment
Induration cutoff >5mm:
 • Recent exposure to an individual
TB • Abnormal CXR ... consistent with old ... employees in high risk ... carcinoma of head/neck/lung ... SkinTest #TST #diagnosis
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
throughout the lungs ... hematogenous spread of a disease ... Differential Diagnosis ... #pulmonary #CXR ... #clinical #CT
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
risk secondary ... to 8 years Clinical ... • Chronic lung ... lymphocytic interstitial lung ... Chest CT: • Ground-glass
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... - Differential Diagnosis ... Framework Disease ... • CT: Halo sign ... Pneumonia: • Risk
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
lymph nodes Risk ... characteristic features Clinical ... and Culture • CXR ... Inhibitor: • Risk ... • Check CXR and
Problem Representation - Approach to the Infectious Disease Patient

Who: Patient age and host/risk factors (such as
Approach to the Infectious ... Disease Patient ... Patient age and host/risk ... illness What: Key signs ... e.g. brain and lung
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
• Domestic and wild ... Food products Risk ... : Clinical Manifestations ... Lung Disease: ... • Clinical (Symptoms