A 45 year old female presents with a complaint of ...

Typically, gallstones will create a shadow, which appear as a strong black line below it (Figure 6). Shadowing is created by the high degree of echogenicity of the stone and is one way to differentiate gallstones from gallbladder polyps, which do not shadow (Figure 7). Figure 7. Image of a gallbladder demonstrating polyps without posterior ... ................
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