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[Can the high-resolution 13-MHz ultrasonography facilitate the preoperative localization and marking of
P P Kenzel1, J Hadijuana, W Schoenegg
1Strahlenklinik und Poliklinik, Klinikum Virchow, Medizinische Fakultät, Humboldt-Universität zu Berlin.
Purpose:
The value of 13 MHz ultrasound regarding the preoperative localisation in combination with mammography were investigated into.
Material And Method:
Out of 112 mammaographically detected calcifications, 30 (30 patients) were clusters of microcalcifications. Out of these, 23 were classified as suspicious of malignancy and were preoperatively localised with a 7.5 and 13 MHz probe. Upon marking the skin, a fine needle was inserted, and after due correction blue dye or coal solution was instilled.
Results:
Following mammographically shown position, 23 clusters of microcalcifications could be localised using the 13 MHz probe. A localisation with the 7.5 MHz probe was impossible in all cases. A single correction of the needle's site was necessary with 35% (8/23) of patients. The maximum distance of the needle's tip in case of misposition measured 11 mm.
Conclusion:
Giving a known mammographic position and a sonographic perceptibility of clusters of microcalcifications in a maximal depth of penetration of 2 cm, 13 MHz high resolution ultrasound examination in combination with mammography prove to be a valuable means in facilitating the preoperative localisation.