title: [Can the high-resolution 13-MHz ultrasonography facilitate the preoperative localization and marking of microcalcification clusters?].
abstract: OBJECTIVE
  The value of 13 MHz ultrasound regarding the preoperative localisation in combination with mammography were investigated into.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Strahlenklinik und Poliklinik, Klinikum Virchow, Medizinische Fakultät, Humboldt-Universität zu Berlin.
authors.forename: P P
authors.initials: PP
authors.lastname: Kenzel
authors.forename: J
authors.initials: J
authors.lastname: Hadijuana
authors.forename: W
authors.initials: W
authors.lastname: Schoenegg
authors.forename: C
authors.initials: C
authors.lastname: Minguillon
authors.forename: N
authors.initials: N
authors.lastname: Hosten
authors.forename: R
authors.initials: R
authors.lastname: Felix
mesh_terms: D001941:Breast Diseases / Q000000981:diagnostic imaging*; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D002114:Calcinosis / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008327:Mammography; D014463:Ultrasonography