21 results
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
sweats, chills (infection ... Dyspnea (underlying lung ... lymadenopathy, clubbing, chest ... ) • Abnormal CXR ... refer + order CT
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... Blood cultures • CXR ... ) • CXR upright ... CT Lung Abscess ... Abscess Differential
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
in HIV-AIDS Bacterial ... failure, COPD, Lung ... +/- High res CT ... chest scan), CBC ... Diseases Fellows
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
in HIV/AIDS Patients ... Actinomyces spp., NHL; Lung ... tuberculosis Infectious ... #differential # ... diagnosis #chestCT
IgG4-Related Disease
Clinical history:  Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor
4 phenotypes:
 •
IgG4-Related Disease ... head and neck, pancreas ... biliary, renal, lung ... concentration PET-CT ... #rheumatology
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Miliary Pattern - Chest ... throughout the lungs ... hematogenous spread of a disease ... diagnosis #pulmonary #CXR ... #clinical #CT
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Lungs: • 90% ... Hematologic malignancy ... • Dyspnea, • Chest ... Imaging, high res CT ... #differential #
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
• Chronic lung ... disease • ... lymphocytic interstitial lung ... Chest CT: • Ground-glass ... hypogammaglobulinemia #immunology #hematology
Incidental Finding of Oleothorax - A chest radiograph showed a dense opacity in the upper area
Oleothorax - A chest ... The differential ... collapse the involved lung ... PCC #Radiology #CXR ... #Oleothorax #NEJM
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... in HIV - Differential ... Diagnosis Framework Disease ... • CT: Halo sign ... #AIDS #pulmonary