Imaging & Radiology · Respiratory System · Medium
Silhouette
Meaning: Sign where loss of a normal border indicates adjacent disease of similar density.
In practice: Right middle lobe pneumonia obliterates the right heart border on a PA chest radiograph.
Quick check
Two questions on related imaging & radiology words.
Which word means: Replacement of lung air spaces with fluid or tissue, seen as whiteness on X-ray.
Answer: Consolidation
Which word means: An image produced by exposing a detector to X-rays passing through the body.
Answer: Radiograph
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