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Sacrectomy margins for rectal cancer invading sacrum: An anatomic study

Invasion is not rare to sacrum for locally advanced rectal cancers and sacrectomy from different levels have been described. We searched related articles [1–7] and books about colorectal surgery, oncological surgery, anatomy, orthopedics, spinal surgery, but we could not find any knowledge to define measurements of sacral vertebra levels. The purpose of this study is to reveal measurements, which can define sacrectomy margins during surgery.