31 results
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
predominance: Respiratory ... Hypersensitivity pneumonitis, Respiratory ... bronchiolitis #Diagnosis #Radiology ... #Pulmonary #CTChest ... #GroundGlass #Differential
Chest Pain - Differential Diagnosis Framework

Cardiovascular Causes of Chest Pain:
 • Myocardium:
	- Myocarditis
	- CAD/ACS
	- Valvulopathy
	- Myopericarditis
Chest Pain - Differential ... Myopericarditis • Vascular ... - Tamponade Pulmonary ... Costochondritis - Tietze syndrome ... Pleuritis • Alveoli
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Hypoventilation: CNS of Respiratory ... Hypoventilation Syndrome ... , Muscular Weakness ... Hepatopulmonary Syndrome ... Hypoxia #hypoxemia #differential
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Differential diagnosis ... Cardiogenic pulmonary ... #Clinical #Radiology ... #Pulmonary #CTChest ... Carcinomatosis #Mimic #Differential
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Failure - Differential ... first part of alveolar ... obesity-hypoventilation syndrome ... hepatopulmonary syndrome ... Failure #hypoxia #Differential
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Chronic Dyspnea - Differential ... Acute Coronary Syndrome ... Thickening/Masses Chest ... Alveoli • Pneumonia ... #Dyspnea #SOB #Differential
ARDS/VALI progression over the course of 1 week 
 (a) Day 1 - No pathological findings.
Progressing to diffuse alveolar ... normal-sized heart and ... vascular structures ... help in the differential ... #Clinical #Radiology
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Patterns - Differential ... Interstitial Edema, Alveolar ... Hypersensitivity Pneumonitis, Respiratory ... Crazy Paving: Alveolar ... #radiology
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
: Diffuse alveolar ... and renal manifestations ... symptomatology Differential ... high resolution chest ... #differential #
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
the air in the alveoli ... the air in the alveoli ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Consolidation #Differential