Intraoperative Assessment of Surgical Margins Using Confocal Microscopy in Comparison With Reference Extemporaneous Examination

Inclusion Criteria: * Adult patient ≥18 years old * Squamous cell or basal cell tumor (1 to 4 cm) of mucous or cutaneous origin. * Patient whose surgical indication has been validated in a consultation meeting * Patients with scheduled surgery * WHO\< or =2 * ASA \< 3 * Patient affiliated to the social security system * Patient has understood, signed and dated the consent form. Exclusion Criteria: * History of irradiation in the surgical area * Women who are pregnant or who are breast-feeding. * Persons deprived of their liberty or under guardianship (including curators)