17 results
Tree in Bud Sign
The Tree-in-Bud sign represents Endobronchial spread in a linear branching pattern and centrilobular
It is caused by ... bacterial/viral/fungal ... pneumonia, congenital ... TreeInBud #Sign #diagnosis ... radiology #ChestCT #pathophysiology
Causes of Acute Onset Fever - Differential Diagnosis Algorithm
Viral:
 • Rhinovirus
 • Influenza Virus
 • Parainfluenza
Causes of Acute ... - Differential Diagnosis ... Infectious - Other: • Fungal ... Bacteremia Septic Shock ... Infection • Pneumonia
Antibiotics for severe community-onset pneumonia 

Atypical coverage always 

- Usually azithromycin 500 mg daily 

- Doxycycline
community-onset pneumonia ... piperacillin-tazobactam Septic Shock ... only in selected cases ... #Community #Acquired ... Antibiotics #Coverage #Management
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
and Management ... • Most common cause ... Lung Abscess Pathophysiology ... Prevotella • Fungal ... #differential #causes
Blastomycosis (Blastomyces): Gilchrist’s disease, Chicago disease - Summary Sheet
 • Morphology
 • Geography, Reservoir and Mode
- Sporadic cases ... resembles community-acquired ... pneumonia with ... • Management ... #fungal
C.diff - Clostridioides Difficile Infection (CDI) - Diagnosis and Management - GrepMed Handbook

Clinical Presentation + Progression:
and Management ... Toxic Megacolon, Shock ... Perforation) Pathophysiology ... can be community-acquired ... Ileus, Megacolon, Shock
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Lymphohistiocytosis (HLH) Pathophysiology ... Auto-amplification loop Diagnosis ... Purtilo (XLP) Acquired ... Drugs, Unknown cause ... #management #treatment
Causes of Myocarditis 
1. Infectious Myocarditis
 • Bacterial - Staphylococcus, Streptococcus, Pneumococcus, Meningococcus, Gonococcus, Salmonella, Corynebacterium
Causes of Myocarditis ... tuberculosis), Mycoplasma pneumoniae ... Weil disease) • Fungal ... Radiation, Electric Shock ... #differential #diagnosis
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
severe community-acquired ... infections: Pneumonia ... and M panel Management ... DDX - Other causes ... #management
Empyema Necessitans (EN) on Chest Wall Physical Examination

Pulmonary teaching case: you are called to the bedside
Pulmonary teaching case ... was admitted for pneumonia ... drain - What’s the diagnosis ... most common) - Fungus ... surgery is required