The evolving non-surgical ablation of breast cancer: Mr Guided focused ultrasound (MRgFUS) |
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Authors: | Hidemi Furusawa Kiyoshi Namba Hiroshi Nakahara Chiaki Tanaka Yukiko Yasuda Emiko Hirabara Mikiko Imahariyama Kansei Komaki |
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Institution: | (1) Division of Breast Surgical Oncology, Breastopia NANBA Hospital, Miyazaki, Japan;(2) Division of Diagnostic Radiology, Breastopia NANBA Hospital, Miyazaki, Japan;(3) Division of Breast Surgical Oncology, Brestopia NANBA Hospital, 2-112-1 Maruyama, 880-0052 Miyazaki City, Miyazaki, Japan |
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Abstract: | MRgFUS (MR guided Focused Ultrasound) being one of the non-surgical ablation techniques. We have already achieved favorable
results in the past clinical study of MRgFUS to local treatment. New twenty one cases of invasive/noninvasive ductal carcinoma
of the breast were treated by MRgFUS. Core needle biopsy led to the definitive diagnosis. All the patients were positioned
prone in the treatment, using the therapeutic apparatus such as Signa Excite 1.5T for MRI and ExAblate 2000 version 2.6/4.1
for FUS. Irradiation was not applied to all the 21 cases after MRgFUS. Axillary lymph node metastases were examined by dissection
or sentinel lymph node biopsy. Recurrence or abnormal area of residual cancer was treated with Re-MRgFUS or ablated by usual
surgery. All the 21 cases were from women patients. Median age is 54 years (range: 34–72). Median diameter of tumor is 15
mm (range: 5–50). As for the numbers of treatment, 17 patients were treated once, and 4 patients twice. Median period of observation
is 14 months (range: 3–26). One case of recurrence of pure mucinous carcinoma was experienced. No evidences of recurrence
were obtained through MRI for the rest of 20 cases. Skin burns were found in 2 cases. The patient had dimple on the skin immediately
above tumor. In conclusion, MRgFUS is a good mean as local control of breast cancer, but the indicated case must be selected
strictly. And it needs to observe longer the patients who ware treated by MRgFUS alone. |
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Keywords: | Breast cancer MRI guided focused ultrasound Ablation surgery |
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