Objective. To evaluate what is the proportion of surgery rooms from Marseilles' area that do perform excisional therapies for CIN without any use of colposcopic guidance. Materials and methods. From November 2012 to January 2013, a survey was conducted among all surgery rooms from Marseilles' area practicing excisional therapies for CIN. In addition, answers from gynecologists from Marseilles' area who participated to a national survey that evaluated practices of excisional therapies in France were specifically analyzed. Results. Among the 55 surgery rooms from Marseilles' area practicing excisional therapies, 52 (94.1%) participated to the current survey. A colposcope was available in only 19 (36.5%) surgery rooms and was systematically used for the guidance of excisional therapies in only 4 (21%) of these surgery rooms. Finally, 36 (69.2%) surgery rooms answered performing excisional therapies without any use of colposcopic guidance. Colposcopy was occasionally and systematically used in 12 (23.1%) and 4 (7.7%) surgery rooms, respectively. Among the 116 gynecologists from Marseilles' area who answered to the national survey, 88 (75.9%) answered not using colposcopy when performing excision for CIN. Only 6% answered performing excision systematically under direct colposcopic vision and 18.1% occasionally. Conclusion. No colposcopic guidance is used when performing excision for ON in the majority of surgery rooms from Marseilles' area. (C) 2015 Elsevier Masson SAS. All rights reserved.