Which Doppler finding would immediately raise concern for a cystic breast lesion?

Which Doppler finding would immediately raise concern for a cystic breast lesion?

• A. Internal vascularity
• B. No flow
• C. Low-resistance peripheral flow
• D. Pulsatile flow in the wall

Answer: (A)

The important idea is that simple cysts in the breast are expected to be avascular on Doppler ultrasound. If you detect internal vascularity inside a cystic-appearing lesion, it indicates there is tissue with blood supply within the lesion, suggesting a complex cyst or a solid component. That finding is what raises immediate concern because it can be associated with malignancy or infection and typically prompts further evaluation, such as sampling or closer imaging follow-up. No flow would be normal for a simple cyst, so it does not raise concern. Low-resistance peripheral flow can occur with various processes and isn’t as specific to intralesional complexity. Pulsatile flow in the wall might reflect nearby vessels or wall vascularity but doesn’t as strongly indicate a solid component inside the cyst.

The important idea is that simple cysts in the breast are expected to be avascular on Doppler ultrasound. If you detect internal vascularity inside a cystic-appearing lesion, it indicates there is tissue with blood supply within the lesion, suggesting a complex cyst or a solid component. That finding is what raises immediate concern because it can be associated with malignancy or infection and typically prompts further evaluation, such as sampling or closer imaging follow-up.

No flow would be normal for a simple cyst, so it does not raise concern. Low-resistance peripheral flow can occur with various processes and isn’t as specific to intralesional complexity. Pulsatile flow in the wall might reflect nearby vessels or wall vascularity but doesn’t as strongly indicate a solid component inside the cyst.