Teaching Points
- Chronic dyspnoea is defined as dyspnoea lasting more than one month.
- Plain chest radiography provides useful information in the majority of cases to justify its routine use.
- Indications for CT/HRCT include :
- Restrictive lung disease.
- Preoperative assessment of patients who are being referred for lung reduction surgery.
- Patients who have dyspnoea and reduced single-breath diffusing capacity for carbon monoxide without evidence of airflow obstruction.
- Patients with chronic dyspnoea in whom the initial evaluation (clinical assessment, CXR and pulmonary testing) is non diagnostic or non revealing.
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