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When Mammography Is Equivocal, US Is Critical.

WASHINGTON -- Ultrasound of the breast is essential in symptomatic patients when mammography shows dense tissue or when other findings are equivocal, Dr. M.R. O'Reilly urged at the annual meeting of the American Roentgen Ray Society.

Ultrasound (US) is especially useful in postmenopausal women taking hormone replacement therapy who have dense breast tissue, said Dr. O'Reilly of the department of radiology at Queen Mary's Hospital in London.

The investigator reviewed imaging studies from 20 women whose breast cancer was not evident on mammography slides.

The 22 tumors in these women were confirmed as cancer by histopathologic examination following resection.

The women were aged 30-74 years at diagnosis, with nearly 60% of them falling into the "perimenopausal" 41- to 50-year age bracket.

Fourteen of the cancers (64%) were smaller than 2 cm.

Another 16 of the lesions were found to be infiltrating ductal carcinomas, 2 were invasive tubular carcinomas, 2 were ductal carcinoma in situ, 1 was invasive lobular carcinoma, and 1 was a mixed infiltrating ductal and lobular carcinoma, according to Dr. O'Reilly's findings.

Most of the tumors were located in the lower outer quadrant of the breast, and about one-third were in the upper outer quadrant, the investigator noted at the meeting.

Finally, three were retroareolar, according to the poster, which was presented at the meeting.
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Author:Moon, Mary Ann
Publication:OB GYN News
Date:Aug 15, 2000
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