الفهرس | Only 14 pages are availabe for public view |
Abstract Ultrasonography examination of the breast has been found to · be one of the new promising modalities in the diagnosis of different breast lesions. The aim of this work was to highlight the current role of , ultrasonography in diagnosis of different breast lesions in order to reach the proper diagnosis and staging of the disease, decrease the number of biopsies performed for benign solid masses and making rapid and early detection of malignant lesions before its dissemination. This helps the surgeon to deal with different patients according to their urgency. Ultrasonography has the advantages over mammography in: differentiating cystic from solid lesions, detection of occult lesions in dense breast which is seen in (adolescents, pregnant women, lactating females and patients with peau d’orange skin with inability to feel a mass), detection of peripherally located . lesions in areas that can not be correctly imaged with mammographic views, diagnosis of inflammatory breast diseases when adequate compression may not be achieved due to tenderness and distinguishing breast cancer from benign . breast lesions. The idea of colour and power Doppler ultrasonography by which differentiation between benign and malignant breast lesions is achieved by detecting the neovascularization of the tumours which are typically tortuous and showing the characteristic malignant spectral analysis. Both show great advantage in detecting masses not seen in mammography and can change the diagnosis of benign masses on mammography to malignant one. They are useful in differentiation between a malignant lesion in the breast causing edema of the upper limb due to obstructive metastasis to the upper limb lymphatic from upper limb edema due to subclavian vein thrombosis. Also colour and power Doppler ultrasonography are accurate methods of diagnosing local extension as well as distant extension in axillary, supraclavicular and internal mammary groups of lymph nodes. Power Doppler ultrasonography based on total integrated power of the Doppler spectrum is now considered superior to colour Doppler ultrasonography in the demonstration of vascular flow because of such advantages as high sensitivity to slow flow, no angle dependency. Recently, MRI has been investigated as a new method for breast 1magmg. Its role 1s only complementary to mammography and ultrasonography. Due to its high sensitivity it is of great use in: detection of very small lesions, differentiation of surgical scar from carcinoma on post treatment mammograms and investigation of breast implants. However, its inability to detect calcifications provides strong disadvantage in addition to its high cost. At last the use of ultrasonography, colour and power Doppler ultrasonography are techniques which can provide non invasive accurate early detection and staging of cancer breast. |