Which statement best contrasts a complicated cyst with a complex cyst?

Which statement best contrasts a complicated cyst with a complex cyst?

• A. A complicated cyst is cloudy but harmless; a complex cyst includes solid parts that may indicate malignancy
• B. A complicated cyst is always malignant; a complex cyst is benign
• C. A simple cyst is the same as a complex cyst
• D. A complex cyst has no vascularity

Answer: (A)

The key idea is how the content inside a breast cyst changes the level of concern on ultrasound. A complicated cyst has internal echoes due to debris, hemorrhage, or infection, which makes it look cloudy but it remains cystic without true solid tissue. A complex cyst, on the other hand, contains solid components or very thick septations, often with vascularity, which raises concern for malignancy and usually warrants further evaluation. So the statement that best contrasts them is that a complicated cyst is cloudy but harmless, while a complex cyst includes solid parts that may indicate malignancy. Note: it isn’t accurate to say a complicated cyst is always malignant, nor that a simple cyst is the same as a complex cyst, or that a complex cyst has no vascularity.

The key idea is how the content inside a breast cyst changes the level of concern on ultrasound. A complicated cyst has internal echoes due to debris, hemorrhage, or infection, which makes it look cloudy but it remains cystic without true solid tissue. A complex cyst, on the other hand, contains solid components or very thick septations, often with vascularity, which raises concern for malignancy and usually warrants further evaluation.

So the statement that best contrasts them is that a complicated cyst is cloudy but harmless, while a complex cyst includes solid parts that may indicate malignancy.

Note: it isn’t accurate to say a complicated cyst is always malignant, nor that a simple cyst is the same as a complex cyst, or that a complex cyst has no vascularity.