Which feature indicates a complex cyst rather than a simple cyst?

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Multiple Choice

Which feature indicates a complex cyst rather than a simple cyst?

Explanation:
A complex cyst is signaled by internal septations or solid components, because these features show internal architecture beyond a pure fluid-filled cavity. Simple cysts appear anechoic with smooth, thin walls and typically exhibit posterior acoustic enhancement due to unobstructed fluid, indicating no internal structure. While posterior enhancement and a smooth border can be seen with simple cysts, they do not indicate complexity on their own. Septations or solid areas within the cyst raise suspicion for more than just fluid and often prompt closer follow-up or further evaluation.

A complex cyst is signaled by internal septations or solid components, because these features show internal architecture beyond a pure fluid-filled cavity. Simple cysts appear anechoic with smooth, thin walls and typically exhibit posterior acoustic enhancement due to unobstructed fluid, indicating no internal structure. While posterior enhancement and a smooth border can be seen with simple cysts, they do not indicate complexity on their own. Septations or solid areas within the cyst raise suspicion for more than just fluid and often prompt closer follow-up or further evaluation.

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