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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes A Dark Spot On The Breast?

A dark spot was found in my breast, with a ultra sound. They did a biopsy. Does that mean it's cancer, because the spot wasn't white? Age 42, 5ft. 3 in. 105 lbs. A spot was discover two years ago, and it was white and is ok. This is a new area that was found with ultra sound.
Mon, 9 Mar 2015
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Radiologist,  's  Response
Hi,
Thanks for writing in.

A spot in the breast that is totally black is most likely to be a cyst. In the ultrasound scan fluid appears black and fat appears white. I understand that the previous scan showed a white spot that was regular and might have been a benign finding. Regarding the recent black spot, it will help to know if the area is completely black or not, whether the shape is regular or not and if the margins are clear. If the black spot is completely black and has a well defined shape with regular margins then it is most likely a breast cyst. To confirm this finding it is best to do a FNAC test by inserting a needle under ultrasound guidance and taking out the fluid for study under a microscope Please do not worry.
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What Causes A Dark Spot On The Breast?

Hi, Thanks for writing in. A spot in the breast that is totally black is most likely to be a cyst. In the ultrasound scan fluid appears black and fat appears white. I understand that the previous scan showed a white spot that was regular and might have been a benign finding. Regarding the recent black spot, it will help to know if the area is completely black or not, whether the shape is regular or not and if the margins are clear. If the black spot is completely black and has a well defined shape with regular margins then it is most likely a breast cyst. To confirm this finding it is best to do a FNAC test by inserting a needle under ultrasound guidance and taking out the fluid for study under a microscope Please do not worry.