The purpose of this study is to analyze the average direct costs of each of these techniques, represented by the costs directly linked to the management of breast cancer, to the surgical intervention and to the techniques evaluated (Indocyanine Green and isotopes) which are: consultations, hospitalizations, resources consumed during the surgical intervention, as well as the time of the patients, transport...

The main objective is to evaluate the overall cost at 1 month of the sentinel lymph node detection technique using Indocyanine Green compared to the technique using isotopes in patients with breast cancer, from the point of view of health insurance and the hospital.

The chosen time horizon is up to 1 month post-intervention. The choice of this time horizon corresponds to the usual duration of follow-up for patients who have benefited from one of the sentinel lymph node detection techniques, in order to collect the main post-surgical complications.

This is a multicenter, prospective, observational, non-randomized study, aimed at comparing the overall cost of two sentinel lymph node detection techniques (Indocyanine Green and isotope) from a dual perspective (health insurance and hospital).

Inclusion Criteria:

• Patient aged 18 or over, having given her oral non-objection ;
• Patient with histologically proven breast cancer ;
• Patient eligible for the sentinel lymph node technique by Indocyanine Green or isotopes.

Exclusion Criteria:

• Patient who has expressed her opposition to the use of her medical data ;
• Patient under legal protection, guardianship or curatorship ;
• Pregnant patient ;
• Patient not affiliated to a social security scheme.

Patient with histologically proven breast cancer

Patient with histologically proven breast cancer, eligible for sentinel lymph node technique by Indocyanine Green or isotopes