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A 47-year-old member asked:

doctors, what is the difference between a cyst and tumor on an ultrasound?

1 doctor answer1 doctor weighed in
Dr. Michael Gabor
Diagnostic Radiology 33 years experience
Ultrasound: A simple cyst is generally a rounded, thin walled structure filled with uncomplicated fluid..it will look like a black circle on US. A neoplasm may be cystic, but may have a thicker or irregular wall, internal solid components or septations, along with fluid. It may be completely solid too. Infrequently there is some overlap of features and it may be difficult to tell the difference.

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A 48-year-old member asked:

What are cyst and tumor on ultrasound?

1 doctor answer2 doctors weighed in
Dr. Paxton Daniel
Radiology 39 years experience
Good question: A simple cyst is a collection of fluid with no associated abnormal soft tissue growth around or inside it. A tumor, or abnormal growth of tissue, may have cysts associated with it depending on what kind of tumor it is. That is why we have to be very careful when we look at cysts so that we know when something is a simple cyst and when it might be a tumor with cysts in it. I'm generalizing here.

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Last updated Jun 22, 2014
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