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Sonographic evaluation of the breast
L A Venta1, C M Dudiak, C G Salomon
1Department of Radiology, Loyola University Medical Center, Maywood, IL 60153.
Summary
Understanding breast ultrasound (US) imaging is key for accurate diagnosis. This guide details normal breast US appearance and lesion characteristics, aiding in differentiating cysts from solid masses.
Area of Science:
- Radiology
- Medical Imaging
Background:
- Accurate breast ultrasound (US) interpretation requires knowledge of normal breast anatomy and lesion appearances.
- Optimal breast sonography relies on specific techniques and equipment, including 5-10-MHz linear transducers and appropriate gain settings.
Purpose of the Study:
- To outline essential ultrasonographic techniques for breast imaging.
- To describe the US characteristics of normal breast tissue and various lesions.
- To highlight the role of US in differentiating benign from malignant breast conditions.
Main Methods:
- Review of established ultrasonographic techniques for breast imaging.
- Description of the echogenicity and structural features of normal breast parenchyma (fat, fibrous, glandular tissue).
- Characterization of US findings for common breast lesions, including cysts, benign solid masses, and malignant tumors.
Main Results:
- Normal breast fat is hypoechoic, fibrous tissue echogenic, and glandular tissue intermediate.
- Cysts appear anechoic with sharp margins and posterior acoustic enhancement.
- Malignant masses typically present as hypoechoic lesions with irregular margins and shadowing, though variations exist.
Conclusions:
- Breast ultrasound is crucial for differentiating cysts from solid lesions.
- US effectively evaluates palpable masses in younger women or those with dense breasts and normal mammograms.
- Mastery of breast US techniques and lesion interpretation improves diagnostic accuracy.