10 results
Pulmonary Nodule
Evaluation is guided by nodule size & assessment of probability of malignancy. In addition is
masses & should ... comorbidities, such as chronic ... obstructive pulmonary disease ... coronary artery disease ... Management options
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
and Management ... pneumonia • Chronic ... CT Lung Abscess ... of PCN allergy ... #differential #causes
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Diagnosis Framework Disease ... angioinvasive disease ... • CT: Halo sign ... Abdominal pain, chronic ... Infections #HIV #AIDS
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
Autoimmunity • Chronic ... lung disease ... Chest CT: • Ground-glass ... opacities • Nodules ... DDX - Other causes
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Connective tissue diseases ... centrilobular nodules ... in the adjacent lung ... of the affected lung ... CT) • Broncho-arterial
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
lung disease ... status NTM Cause ... • Nodular or ... Centrilobular nodules ... Imaging, high res CT
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
life-threatening diseases ... Other tests: • CT ... sparing of the lung ... CT ... differential #diagnosis #management
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
multiple pulmonary nodules ... • Chronic toxicity ... (e.g., chronic ... Exclude other causes ... Pulmonary #diagnosis #management
Disseminated Actinomycosis- ...Computed tomography of the chest and abdomen revealed multiple pulmonary nodules (Panel A) associated
tomography of the chest ... multiple pulmonary nodules ... bacterial infection caused ... #NEJM #clinical ... #radiology #CT #
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
yeast • At risk: AIDS ... transplantation • MCC ... change in the lungs ... nails, bronchi, lungs ... Fungal #Diagnosis #Management