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==References==
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Revision as of 19:00, 2 August 2012

Hypersensitivity pneumonitis Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Hypersensitivity pneumonitis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications & Prognosis

Diagnosis

Diagnostic Criteria

History and Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

Chest X Ray

CT

MRI

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Hypersensitivity pneumonitis CT On the Web

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Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Hypersensitivity pneumonitis CT

CDC on Hypersensitivity pneumonitis CT

Hypersensitivity pneumonitis CT in the news

Blogs on Hypersensitivity pneumonitis CT

Directions to Hospitals Treating Hypersensitivity pneumonitis

Risk calculators and risk factors for Hypersensitivity pneumonitis CT

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

CT

Acute hypersensitivity pneumonitis

  • Chest radiographs in affected patients may be normal; thin-section CT can be helpful in these patients for showing characteristic centrilobular ground glass or nodular opacities.
  • When abnormal, chest radiographs typically show focal or diffuse heterogeneous or homogeneous opacities.

Subacute hypersensitivity pneumonitis

  • Patients with subacute disease usually have a more indolent clinical presentation. Nodular opacities are a characteristic feature on chest radiographs and CT. Centrilobular ground-glass or nodular opacities on CT suggest the diagnosis.
  • Head cheese sign

Chronic hypersensitivity pneumonitis

  • Chronic disease typically manifests with upper lung zone fibrosis. Characteristic distribution and presence of centrilobular nodules on CT help distinguish chronic hypersensitivity pneumonitis from idiopathic pulmonary fibrosis.

References

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