HRCT in acute lung disease - CAR Lifelong Learning/Meetings/ASM2013_Speakers_Pres... · HRCT in...
Transcript of HRCT in acute lung disease - CAR Lifelong Learning/Meetings/ASM2013_Speakers_Pres... · HRCT in...
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HRCT in acute lung disease (Clinical Manifestations CT Findings and Differential Diagnosis of Acute Interstitial Pneumonitis)
Dr. Yannick Cartier, M.D, F.R.C.P.C
CAR 2013
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Objectives
CAR 2013
At the end of the session the participant will:
Have a much better understanding of the most common acute lung diseases and their CT findings.
Be able to distinguish, when possible, the CT findings of DAD or AIP from other acute lung diseases.
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Objectives
CAR 2013
At the end of the session the participant will:
Have a much better understanding of other less common acute idiopathic interstitial pneumonitis
Have a much better understanding of the most common causes of infectious interstitial pneumonitis and their differential diagnosis
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CAR 2013
Case # 1
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What is the most likely diagnosis ?
CAR 2013
A: Pulmonary edema
B: Just a bad classical pneumonia
C: Atypical presentation of a typical Hanta virus pneumonia
D: Goodpasture
E: Acute DIP
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What is the most likely diagnosis ?
CAR 2013
A: Pulmonary edema
B: Just a bad classical pneumonia
C: Atypical presentation of a typical Hanta virus pneumonia
D: Goodpasture
E: Acute DIP
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Essential anatomy : The Secondary pulmonary lobule
CAR 2013
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The Secondary pulmonary lobule
CAR 2013
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CAR 2013
Pulmonary edema
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CAR 2013
Pulmonary Edema
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CAR 2013
Ddx:LC
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CAR 2013
Pulmonary Edema
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CAR 2013
Case # 2
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What is the most likely diagnosis ?
CAR 2013
A: Pulmonary edema again! ;o(
B: Just a bad classical pneumonia
C: Atypical pneumonia
D: NSIP
E: Organizing DAD
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What is the most likely diagnosis ?
CAR 2013
A: Pulmonary edema again! ;o(
B: Just a bad classical pneumonia
C: Atypical pneumonia
D: NSIP
E: Organizing DAD
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What is DAD?
CAR 2013
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CAR 2013
Acute DAD
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Crazy paving
CAR 2013
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CAR 2013
Ddx
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CAR 2013
Ddx: TRALI
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CAR 2013
Organizing DAD
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CAR 2013
Organizing DAD
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CAR 2013
Organizing DAD
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CAR 2013
Organizing DAD
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CAR 2013
Organizing DAD
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CAR 2013
DAD survivor
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CAR 2013
Ddx: Acute exacerbation of chronic ILD
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CAR 2013
Acute exacerbation of chronic ILD
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CAR 2013
Case # 3
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What is the most likely diagnosis ?
CAR 2013
A: Pulmonary edema
B: Just a bad classical pneumonia
C: Acute silicosis
D: Acute NSIP
E: Acute UIP
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What is the most likely diagnosis ?
CAR 2013
A: Pulmonary edema
B: Just a bad classical pneumonia
C: Acute silicosis
D: Acute NSIP
E: Acute UIP
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CAR 2013
Bacterial pneumonia
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CAR 2013
Bacterial pneumonia
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CAR 2013
TB
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CAR 2013
TB
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CAR 2013
Ddx
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CAR 2013
Ddx
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CAR 2013
Ddx
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CAR 2013
Peumocystis Jirovecii
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CAR 2013
Lung cysts
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CAR 2013
Pitfall
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CAR 2013
Viral pneumonia
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CAR 2013
Case # 4
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What is the most likely diagnosis ?
CAR 2013
A: acute UIP
B: fluid overload
C: viral pneumonia
D: Acute HP
E: VIP
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What is the most likely diagnosis ?
CAR 2013
A: acute UIP
B: fluid overload
C: viral pneumonia
D: Acute HP
E: VIP
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CAR 2013
HP
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CAR 2013
Ddx: Pulmonary hemorrhage
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CAR 2013
HP
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CAR 2013
HP
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CAR 2013
HP
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CAR 2013
Case # 5
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What is the most likely diagnosis ?
CAR 2013
A: UIP
B: CKWRPUILD
C: Drug induced ILD
D: Goodpasture
E: Pulmonary edema
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What is the most likely diagnosis ?
CAR 2013
A: UIP
B: CKWRPUILD
C: Drug induced ILD
D: Goodpasture
E: Pulmonary edema
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CAR 2013
Drug induced ILD
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CAR 2013
Drug induced ILD
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CAR 2013
Drug induced ILD
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In summary
CAR 2013
In usual clinical practice, edema is the most likely cause of acute pulmonary disease and has recognizable CT findings
DAD, or AIP when no cause is found, is the hallmark of ARDS patients and has slightly different CT findings than pulmonary edema from heart failure or fluid overload
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In summary
CAR 2013
Acute exacerbation of chronic ILD is often fatal, rapidly progressive, and mimics AIP or DAD in many aspects. Comparison with prior CT is often very useful
HP, from any cause, often has characteristic CT findings and must be recognized ,if possible, since it is a potentially fatal but often treatable disease with a much better prognosis than DAD or acute exacerbation of chronic ILD
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In summary
CAR 2013
INFECTION MUST ALWAYS BE CONSIDERED IN THE DIFFERENTIAL DIAGNOSIS OF ACUTE LUNG DISEASE AND HAS VERY VARIABLE CT FINDINGS DEPENDING ON THE OFFENDING AGENT
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In summary
CAR 2013
There are several less common causes of acute lung disease but only a few have characteristic CT findings
Drug induced lung disease is increasingly encountered and should ALWAYS be considered if somebody is on any medication specially chemotherapeutic agents
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CAR 2013
Thank you!