Lucent

Meaning: Appearing dark or black on an X-ray, indicating low density such as air.

In practice: A lucent area in the lung may indicate a cavity or air collection.

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Two questions on related imaging & radiology words.

Which word means: Aggressive periosteal reaction with fine spicules of new bone radiating outward from a lesion.

Which word means: Appearing abnormally dense or white on X-ray due to increased bone density.

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