Tips of ST-VAB

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  • Takagi Hirona
    Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
  • Iwamoto Naoko
    Department of Breast Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
  • Saitou Keiko
    Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
  • Ikeda Sanae
    Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
  • Okumura Akio
    Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital

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  • 当院におけるステレオガイド下吸引式乳房組織生検の工夫

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Abstract

Purpose: Patients with Category 3 or greater calcification are candidates for stereotactic vacuum-assisted breast biopsy (ST-VAB). However, it is difficult to examine some cases by ST-VAB, because of the position of the calcifications and thickness of the breast. Patients and methods: We retrospectively reviewed the data of 75 cases of ST-VAB from September 2016 to January 2018. Results: Among the 75 cases, difficulty in examination by ST-VAB had been predicted in 26 cases (35%). We simulated 13 cases (50%) pre ST-VAB. Of these, we considered that 3 cases (12%) could not undergo ST-VAB by the usual method. We performed ST-VAB by the following methods: the Bottom-up Method (how to hold the sponges under the breast), 12 cases (35%); Using Half Function Method (how to use the function of the suction devices), 2 cases (9%); Combination-Method (how to use the Bottom-up Method and the Using Half Function Method together), 4 cases (17%); others, 3 cases (13%). After ST-VAB simulation, we confirmed that it is possible to conduct the examination in the usual way in 2 cases (9%). The median breast thickness in normal cases is 40 mm (range: 28-67mm). On the other hand, the median breast thickness in difficult cases is 29 mm (range: 18-40 mm). Six cases were diagnosed as having malignancy. Conclusions: We tried to overcome difficulty in performing ST-VAB by using some different methods, and could perform ST-VAB in all cases that were found to have breast calcification. In difficult cases, it would seem important for the radiographer to think about and select the best method for examination.

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