17 results
Causes of Splenomegaly - Differential Diagnosis Algorithm
Infectious
 • Bacterial
 • Viral (EBV)
 • Parasitic
 • Fungal
Congestive
Causes of Splenomegaly ... Infectious • Bacterial ... Viral (EBV) • Parasitic ... • Fungal Congestive ... #Hematology
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
• Infection: Bacterial ... Ebola, Dengue), Fungal ... Mycetoma, Mucor), Parasitic ... Kaposi's sarcoma • Rheumatologic ... Diagnosis #pulmonary #causes
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework

VENOUS THROMBOSIS

 • Acquired Risk Factors:
	- >48 hours
Testosterone - Coumadin skin ... considered in all cases ... coagulation and other causes ... #pathophysiology ... #hematology #differential
Causes of Pericardial Effusion - Differential Diagnosis
Infectious:
 • Viral: Enterovirus, Herpesvirus, Adenovirus, Parvovirus
 • Bacterial: Mycobacterium
Causes of Pericardial ... Parvovirus • Bacterial ... Coxiella burnetii • Fungal ... Non-Infectious: • Rheumatologic ... - Metastatic: Lung
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
involving both lungs ... WHAT ARE COMMON CAUSES ... 3) Infection (Bacterial ... , TB, NTM, Fungal ... Obstruction 6) Rheumatologic
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... Abscess Pathophysiology ... Prevotella • Fungal ... Coccidioides • Parasite ... #differential #causes
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
lesions • 80% with lung ... , may also see skin ... Infectious: • Bacterial ... • Nocardia • Parasitic ... differential #diagnosis #causes
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Pseudomonas FUNGAL ... • Polymorphic skin ... , • Multiple skin ... factor • May cause ... possible in HIV PARASITIC
Rhombencephalitis
BACTERIAL
- Listeria (biphasic illness with bulbar dysfunction occurring later)
- Mycobacterium tuberculosis
- Pneumococcus
- Brucella
- Borrelia (Lyme Disease)
-
Rhombencephalitis BACTERIAL ... - Influenza A FUNGAL ... Paracoccidioidomycosis PARASITIC ... - small cell lung ... Differential #Diagnosis #Causes
Soil Related Infections - Differential Diagnosis Framework

Mechanism Of Infection:
 • Wound
 • GI: Ingestion, MUD, Contaminated
Inhalation • Skin ... papule on exposed skin ... soil and other material ... jejuni • NTM Parasites ... cause primary pulmonary