Comparison of Diagnostic Performance of an Algorithm and a High Definition Classical Iterative Algorithm Positron Emission Tomography (PET) to 18Fluoro-deoxy-glucose (18FDG) in the Evaluation of Axillary Lymph Node Invasion of Breast Tumors

Inclusion Criteria: * Informed consent and signed by the patient * Age ≥ 18 years * Breast tumor for which the therapeutic indication for surgery has from the outset: breast surgery (conservative or radical) associated with a conventional axillary dissection * Proof of infiltrating ductal carcinoma histology * No known metastasis * No cons-indication to anesthesia. Exclusion criteria: * History of neoadjuvant therapy * Patients with invasive lobular carcinoma * Indication of the use of sentinel node (if invasive carcinoma uni-centric, ≤ 2 cm in diameter, without palpable lymphadenopathy (N0)) * Diabetes is not controlled by conventional treatment (blood glucose\> 1.8 g / l) * Inability to capital * Patients who are pregnant or nursing or of childbearing potential and not using adequate contraception * Persons deprived of their liberty * Major subject of a measure of legal protection or unable to consent * Refusal to participate