Final answer:
Diascopy is a medical technique used to examine a skin lesion and differentiate between vascular and non-vascular lesions.
Step-by-step explanation:
Diascopy is a medical technique used to examine a skin lesion. It involves applying pressure to the lesion and observing the changes in color or appearance. The purpose of diascopy is to differentiate between a vascular or non-vascular lesion. For example, if pressure on a lesion causes it to blanch (lose color), it suggests that the lesion contains blood vessels, indicating a vascular lesion. On the other hand, if the lesion remains unchanged in color, it suggests a non-vascular lesion.
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