Introduction Withimprovements to the breast cancer screening program, more and more womenwithductalcarcinoma in situ (DCIS) are beingdiagnosed and treated. However, the axillarytreatment of patients with DCIS remainscontroversial. These patients, whoexhibitpre-invasive tumorswith no invasive component, are theoreticallybelieved to have no chance of lymphnodemetastases.

Material and Methods itis a retrospectivestudycarried out at the institute of Salah AziezTunisiawhichincluded 243 patients presentedwith the final pathology of DCIS, over a period of 22 yearsbetween the years 1993 and 2014.

Results 243 patients presentedwith the final pathology of DCIS, 18,10% of patients underwentsentinellymphnodebiopsy (SLNB). A total of 61 (25%) patients underwentbreast-conservingsurgery (BCS), and 182 (75%) underwentmastectomy, of which 0,82% and 17,28% respectivelyhad a concomitant SLNB. all the lymphnodessampledwere not metastatic. The colorimetricmethodweredonein 34,09%, the scintigraphicmethod (45,45%) and the use of the twomethodis about 68,18%.

In the post opérative, no complication wasseen in this patients, howeverthe patients whohad anlymphnode dissectionhad a complications lik : Lymphe Dema and lymphocele

Conclusion The rates of SLNB positivity in pure DCIS are verylow, and thereiscontinuinguncertainty about itsclinical importance.