Schiller’s iodine test is applied to the cervix prior to loop excision. Also the upper vagina is stained with 3% iodine solution in order to detect or exclude involvement of the vaginal vault. Care must be taken to make sure that the area of resection includes the iodine-positive margins, which however, should be kept as small as possible. Alternatively LSIL in the periphery of the ectocervix is not excised and treated by laser vaporisation.