16 results
Cavitary Lung Disease - Differential Diagnosis and Workup Algorithm
Acute / Subacute:
 • Acute Infections: Lung abscess,
- Differential ... : Lung abscess, ... Emboli, Fungal Infection ... Diagnosis #Algorithm #lesion ... #pulmonary #differential
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
• 80% with lung ... splenomegaly Other infections ... Infectious: ... Syphilis • Pyogenic Abscess ... #Brain #differential
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... failure, COPD, Lung ... < 200: Pulmonary ... #Infections #HIVAIDS ... diagnosis #evaluation #differential
CAVITY – a useful mnemonic for the causes of a cavitating lung mass.

C = cancer
embolus I = infection ... - pulmonary abscess ... Mnemonic #Cavitary #Lesions ... #Differential # ... Lung #Pulmonary
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... Abscess Pathophysiology ... stable residual lesion ... Abscess Differential ... #Abscess #pulmonary
Hemoptysis - Differential Diagnosis Framework
Airways: 
 • Bronchitis
 • Bronchiectasis
 • Malignancy: Primary bronchogenic CA, Endobronchial
Hemoptysis - Differential ... Fistulas • Dieulafoy lesion ... Parenchyma: • Infection ... westermani, PNA, Lung ... abscess, Aspergillosis
Lung Nodule - Differential Diagnosis Algorithm
Nodule on > 2 Years Without a Change in Size:
 •
Lung Nodule - Differential ... Granuloma • Abscess ... Metastases ("cannonball lesions ... Breast, Testicle) Infection ... Algorithm #Causes #Pulmonary
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Nodular or cavitary lesions ... Growers (Runyon Classification ... Growers (Runyon Classification ... Advanced HIV (CD4 ... #differential #
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 ... lesions • Malnutrition ... abscess Primary ... • Progressive 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 ... lesions • Malnutrition ... abscess Primary ... • Progressive lung