Fine-needle aspiration

Rarity: Common

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At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

2

In collections

Nobody has pulled it yet.

What Wikipedia says

Fine-needle aspiration (FNA) is a diagnostic procedure used to investigate lumps or masses. In this technique, a thin (23–25 gauge (0.52 to 0.64 mm outer diameter)), hollow needle is inserted into the mass for sampling of cells that, after being stained, are examined under a microscope (biopsy).

Excerpt from the Wikipedia article “Fine-needle aspiration”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: KGH, CC BY-SA 3.0, via Wikimedia Commons.