26 results
Causes of Nail Clubbing - Mnemonic 
Cyanotic Heart Disease, Cystic Fibrosis
Lung Cancer, Lung abscess 
Ulcerative Colitis
Causes of Nail Clubbing ... Cystic Fibrosis Lung ... Cancer, Lung abscess ... Mesothelioma Infective Endocarditis ... Nails #Mnemonic #Differential
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Dyspnea (underlying lung ... disease or CHF) ... refer + order CT ... History of cancer, lung ... Diagnosis #Algorithm #causes
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... seen • Chest CT ... Abscess Differential ... Abscess #pulmonary #differential ... #causes #management
Back Pain - Differential Diagnosis
Primary Back Pathology:
 • Musculoligamentous injury (a.k.a. lumbosacral strain)
 • Spondylosis (i.e.
Back Pain - Differential ... (most common: lung ... (most common: lung ... , Aneurysm • Pancreas ... #Diagnosis #causes
Rapidly Growing Mycobacterial Infections

 • Mycobacterium abscessus - Is the most pathogenic and the most likely
most likely to cause ... with underlying lung ... It can also cause ... Mycobacterium #diagnosis #differential ... #infectiousdiseases
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 ... Rheumatologic/Autoimmune diseae ... pulmonary #diagnosis #differential
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
in 24h Airway disease ... Malignancy: Primary lung ... regurgitation, Tricuspid endocarditis ... Postprocedural, Lung ... Diagnosis #pulmonary #causes
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
verrucous) • Lung ... , Pancreas, Gastric ... Septic Emboli Cause ... Marantic (NTBE) Differential ... Treat underlying cause
Vascular Joint Pain - Differential Diagnosis Algorithm 
 - Constant Pain (Ischemia)
 - Acute Onset
 -
Vascular Joint Pain - Differential ... Peripheral Vascular Disease ... Infective Endocarditis ... e.g. fractured long ... #Orthopedics #Causes
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status • Chronic lung ... status NTM Cause ... Imaging, high res CT ... NTM #Infections #differential ... #diagnosis #infectiousdiseases