Responsible of Bichat university hospital proctology unit since 22 years. Clinical practice in proctological consultation, instrumental and surgical treatment and anal endosonography. Coordinator of the French proctological research group (GREP) for the French society of Colo-proctology (SNFCP). Teacher and responsible for the French proctological certificate. Coordinator and investigator in several proctological studies research, particularly in HPV anal lesions.