Breast Cancer Clinical Trial
Official title:
A Randomized Study of Localization of Nonpalpable Breast Lesions - RSL vs WGL
Each year the Danish mammography-screening programme identifies a large number of patients
with small non-palpable breast cancers or precancerous lesions. The majority of these
patients are suitable for breast conserving surgery (BCS). The object of BCS is to remove the
suspicious lesion completely without removing excess healthy breast tissue. To obtain this
accurate lesion localization is essential.
Until today the standard procedure in Denmark has been wire guided localization (WGL).
Although the method has been utilized for a number of years it has several disadvantages.
Often inaccurate lesion localization leads to incomplete lesion removal (positive margin) and
subsequently reoperation. It can postpone the additional systemic treatment, offered after
the operation. Other disadvantages are poor cosmetic outcome and inconvenient planning for
the patient and the departments involved. The wire needs to be placed on the day of the
operation, which decreases the flexibility of the procedure.
The purpose of this study is to test a new method named radioactive seed localization (RSL).
The method uses a small titanium seed containing radioactive iodine. It will be placed in the
centre of the lesion, and during the operation, the surgeon can locate it with a handheld
gamma probe. The seed can be placed a few days in advance, which means a more flexible course
of treatment. The method seems promising with regards to reoperation rates, but it needs
further testing.
Hypothesis:
RSL is a more accurate method, for localization of nonpalpable breast lesions, than WGL.
Using RSL obtains, to a great extent, adequate negative margins, resulting in a reduced
number of re-operations.
The study will be performed as a randomised clinical trial, where the two methods will be
compared to each other. The trial will be performed at the department of breast surgery at
Rigshospitalet and include patients with nonpalpable breast lesions. Besides reoperation
rates, duration of the surgical procedure and the amount of removed breast tissue will be
compared.
n/a
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