11 results
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Chronic Cough - ... sweats, chills (infection ... disease or CHF) ... refer + order CT ... disease #Chronic
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
Autoimmunity • Chronic ... lung disease ... lymphocytic interstitial lung ... Chest CT: • Ground-glass ... Malignancies • Chronic
Disseminated Actinomycosis- ...Computed tomography of the chest and abdomen revealed multiple pulmonary nodules (Panel A) associated
Biopsy of the lung ... , an uncommon, slowly ... progressive bacterial infection ... #NEJM #clinical ... #radiology #CT #
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
tightness Most Common ... Connective tissue diseases ... in the adjacent lung ... of the affected lung ... high-resolution chest CT
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
CAN YOU SEE ON CT ... involving both lungs ... ) WHAT ARE COMMON ... Immunodeficiency 3) Infection ... Rheumatologic/Autoimmune diseae
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Immunocompromised status • Chronic ... lung disease ... encounters due to NTM: Chronic ... lung infections ... Imaging, high res CT
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... • Most common ... pneumonia • Chronic ... • Periodontal disease ... seen • Chest CT
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... Diagnosis Framework Disease ... angioinvasive disease ... • CT: Halo sign ... Abdominal pain, chronic
Broncholithiasis - Differential Diagnosis Framework

 • Also known as: Lung stones, pulmoliths, pneumoliths, bronchial calculi
 •
Also known as: Lung ... control of the infection ... • Nonspecific chronic ... bronchus • Chest CT ... Tracheobronchial Diseases
Thumbprinting in Ischemic Colitis- Contrast-enhanced computed tomography of the abdomen, performed to evaluate the possibility of
complicated diverticular disease ... of the sigmoid colon ... other types of infectious ... clinical #radiology #CT ... thumbprinting #sign #NEJM