25 results
Cavitary Lung Disease - Differential Diagnosis and Workup Algorithm
Acute / Subacute:
 • Acute Infections: Lung abscess,
Subacute: • Acute Infections ... Septic Emboli, Fungal ... Infection, Nocardia ... ): • Chronic Infections ... : TB, NTB, Fungal
Lung Nodules - Differential Diagnosis by Distribution
 • Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis,
Lung Nodules - Differential ... Pneumoconiosis, Infectious ... Random: Metastasis, Infectious ... (viral, TB, fungal ... BrighamChiefs #Lung
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
tuberculosis (LTBI) Pathophysiology ... affecting the lungs ... (NTM) • Fungal ... • Lymphoma • Lung ... • Progressive lung
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
M.kansasii, MAC) Fungal ... > 200: Endemic fungi ... failure, COPD, Lung ... cx (Bacterial, Fungal ... , AFB), TB PCR sputum
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
tuberculosis (LTBI) Pathophysiology ... affecting the lungs ... (NTM) • Fungal ... • Lymphoma • Lung ... • Progressive lung
CAVITY – a useful mnemonic for the causes of a cavitating lung mass.

C = cancer
of a cavitating lung ... pulmonary embolus I = infection ... pulmonary abscess (TB ... , fungal, staph ... #Differential #Lung
Blurry vision in a patient with HIV/AIDS
Anterior Segment:
 • Herpes zoster ophthalmicus
 • Keratitis (HSV, Staph,
Candida, other fungi ... Syphilis, HSV, VZV, TB ... Cocci*, Toxo*, non-infectious ... • Choroidal infections ... vision #HIVAIDS #InfectiousDiseases
Echinococcus Life Cycle
1) Adult in small intestine eggs
2) Embryonated egg in feces
3) Oncosphere hatches; penetrates intestinal
commonly liver and lung ... #Echinococcus #LifeCycle ... #diagnosis #pathophysiology ... #infectiousdiseases
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
segment or lobe of lung ... involving both lungs ... Immunodeficiency 3) Infection ... (Bacterial, TB, ... NTM, Fungal) 4
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
Parenchyma: • Infection ... : Bacterial (TB, ... Ebola, Dengue), Fungal ... Malignancy: Primary lung ... Postprocedural, Lung