23 results
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Dyspnea (underlying lung ... disease or CHF) ... refer + order CT ... disease #Chronic ... Diagnosis #Algorithm #causes
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Periodontal disease ... dentition/gingival disease ... loss • Late disease ... Gingival crevice disease ... non-diagnostic in early disease
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 ... IgG4 #Related #Disease
Bilateral B-Lines in case of Pneumonia on Lung POCUS

Young healthy pt with fever/dyspnea. POCUS lung exam
Bilateral B-Lines in case ... POCUS lung exam ... disease, interstitial ... Lung POCUS shows ... Lung POCUS invaluable
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
CAN YOU SEE ON CT ... segment or lobe of lung ... involving both lungs ... WHAT ARE COMMON CAUSES ... Rheumatologic/Autoimmune diseae
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status NTM Cause ... disease, volume ... disease, adenitis ... disease ... Imaging, high res CT
Streptococcal Toxic Shock Syndrome (STSS)
Complication of invasive GAS disease characterized by shock & MOF → occurs
of invasive GAS disease ... GAS in 30% of cases ... kidneys, liver, lung ... /ARDS, coagulopathy ... BIDMC Infectious Diseases
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
disease • ... Gastrointestinal inflammatory disease ... Granulomatous disease ... • Liver diseases ... disease (GLILD)
Progressive Massive Fibrosis aka Complicated Silicosis.
Silicosis is a fibrotic lung disease caused by inhalation of crystalline
is a fibrotic lung ... disease caused ... With disease progression ... Calcification (seen in CT
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Diagnosis Framework Disease ... angioinvasive disease ... • CT: Halo sign ... factor • May cause ... Infections #HIV #AIDS