Diaphragm – Depression
3. Evaluate for Diaphragm – Depression
A depressed hemidiaphragm can be the result of asthma, COPD, a tumour or a large pleural effusion. The image below depicts flattened diaphragms as a result of bullous emphysema.
Study Smarter
3. Evaluate for Diaphragm – Depression
A depressed hemidiaphragm can be the result of asthma, COPD, a tumour or a large pleural effusion. The image below depicts flattened diaphragms as a result of bullous emphysema.
1. Evaluate for Diaphragm
On the lateral film the costophrenic (CP) angle of each hemidiaphragm (HD) should be sharp.
Right Image: Close up of CP angle of each HD. (RD = right HD and LD = left HD)
Identify: Costophrenic Sulcus
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Look for:
Everything from the heart and great vessels to a line 1 cm posterior to the anterior border of the thoracic vertebral bodies.
Look for:
Anterior to heart and great vessels.
Look for:
This image shows a pulmonary nodule in the right upper lung. Differential diagnosis of pulmonary nodules includes:
Less common causes include:
Pulmonary Edema – Reticulonodular Pattern
Reticulonodular Patterns: A combination of reticular and nodular patterns.
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Pulmonary Edema: Pulmonary edema is a redistribution of vascular fluid into the interstitium first, and then possibly the alveoli. The causes can be cardiogenic, renal failure, or due to respiratory conditions like ARDS.
Peribronchial Cuffing: Normal bronchi do not have the circumferential thickening depicted in the image below.