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[의학과][영상의학과] 영상의학과 사례에 대한 자료입니다.
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1.Hypersensitivity Pneumonitis
본문내용
Differential Diagnosis
Idiopathic Pulmonary Fibrosis
Honeycombing, exclusion of known causes
Silicosis
Upper lung, calcification of hilar lymph node
Sarcoid
upper lung, bilateral hilar lymphandenopathy
Hypersensitivity Pneumonitis
Diffuse reticulonodular infiltration, air trapping
Pathophysiology
Type III & IV hypersensitivity
Type III: immune complex mediated response
Type IV: delayed T cell mediated response
Small particles deposit in bronchioles
Allergic granulomatous reaction
No increase in IgE or eosinophils
Clinical Presentation
Acute form
4~ 8 hours after exposure
Cough, fever, chill, myaliga, dyspnea, nausea
Bibasilar crackle
Subacute form
Few days after exposure
Exertional dyspnea, cough, fatigue
Chronic form
Irreversible fibrosis
Continous exertional dyspnea, cough, cyanosis