What are complex breast cysts?

Fibrocystic changes. Please see other posts on fibrocystic breasts for basic info. A complex cyst is a cyst with debris (nothing bad) that can sometimes look like a solid nodule. Usually the radiologist will recommend a 3 or 6 month repeat film to be sure it is not anything concerning.

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What is a complex breast cyst, and why would an aspiration, and core needle biopsy be recommended?

To rule out cancer. A complex cyst means it is not a simple sac filled with liquid (like a water balloon). Think of a water balloon filled with some smaller water balloons, pebbles, and dirt. This can hide cancer, which is why you need a biopsy. Make sense? Read more...