Fig. 1From: Comparison of two surgical methods for the treatment of CIN: classical LLETZ (large-loop excision of the transformation zone) versus isolated resection of the colposcopic apparent lesion – study protocol for a randomized controlled trialResection margins of classical large loop excision of the transformation zone operation including the transformation zone, which is defined as 3 to 4 mm around the squamocolumnar junction. CIN, Cervical intraepithelial neoplasia; LLETZ, Large loop excision of the transformation zone; SCJ, Squamocolumnar junctionBack to article page