¾Öµ¶ÀÚ ÆíÁö ´ëÀå³»½Ã°æ °Ë»ç½Ã ¸ÍÀå¿¡¼­ÀÇ ¹ÝÀü °üöÀº »ý°¢º¸´Ù ¿ª»ç°¡ ±íÁö¸¸, óÀ½À¸·Î ¿µ¹®ÃÊ·ÏÀÌ ÀÖ´Â Àú³Î¿¡ Á¦´ë·Î ½Ç¸° ³í¹®Àº ÀϺ»¼ÒÈ­±â³»½Ã°æÇÐȸÁö 1999³â 9¿ùÈ£¿¡ °ÔÀçµÈ ¡°Dohden K, Shirasaki S, Takeda T, Watanabe K, Tsuda S. Evaluation of the Overlooked Rate of Colonoscopy in the Ascending Colon Using the Retroflexion Colonoscopic Technique. Gastroenterological Endoscopy 1999;41:2044-50¡±¶ó°í ÇÕ´Ï´Ù. ÀÌ ¿øÀú¿¡¼­ ÀúÀÚµéÀº ´ëÀå³»½Ã°æ °Ë»ç½Ã ¸ÍÀå¿¡¼­ÀÇ ¹ÝÀü °üöÀº ¸Å¿ì Áß¿äÇÏ´Ù°í °­Á¶Çϸç, ¿µ¹® ÃÊ·ÏÀº ´ÙÀ½°ú °°½À´Ï´Ù. Some lesions of the ascending colon may be overlooked on routine colonoscopic examination. Using the retroflexion colonoscopic technique, we estimate the overlooked rate of lesions of the ascending colon. After conventional colonoscopic examination from the cecum to hepatic flexure, the colonoscope was gently retroflexed in the cecum. The retroflexed colonoscope was pulled up to the hepatic flexure for discovering hidden lesions of the ascending colon, and the retroflexed colonoscope was returned at the hepatic flexure. Sixty-four lesions were discovered by conventional colonoscopic examination, and 8 lesions were discovered only after observation using the retroflexion technique. Most of overlooked lesions were under 5 mm in size, but a flat lesion (adenoma) measuring 6 mm and a protruded lesion (adenoma) measuring 10 mm were overlooked. About 11 percent of lesions of the ascending colon, which exist in blind areas, could be overlooked on routine colonoscopic examination. ÇÏÁö¸¸ À̸¦ ÇØ¿Ü¿¡¼­ ¹ßÇ¥ÇÒ ¶§¸¶´Ù ºñÂüÈ÷ ±úÁ®¼­ Á¦´ë·Î °ÔÀçµÈ ¿µ¹® ¿øÀú°¡ ¾ø½À´Ï´Ù. ¡°´ëÀå³»½Ã°æ °Ë»ç½Ã ¸ÍÀå¿¡¼­ÀÇ ¹ÝÀü °üöÀ» ÇÏÁö ¸»¶ó¡±°í ÁÖÀåÇÏ´Â ¹Ì±¹ ³í¹® ¡°Harrison M, Singh N, Rex DK. Impact of proximal colon retroflexion on adenoma miss rates. Am J Gastroenterol 2004;99:519-22¡±ÀÌ ±× ¶§ÀÇ »óȲÀ» Àß ´ëº¯ÇØ ÁÝ´Ï´Ù. ÀÌ ³í¹®¿¡¼­ ÀúÀÚµéÀº ¸ÍÀå¿¡¼­ÀÇ ¹ÝÀü °üöÀÌ ¹«¿ëÁö¹°À̹ǷΠÇÏÁö ¸»¶ó°í °á·Ð ³»¸³´Ï´Ù. There was no difference in miss rates for all polyps or for adenomas (p= 0.31) when the second examination was performed in the forward view versus retroflexed view. A second examination by retroflexion in the proximal colon did not increase the calculated miss rate relative to that performed by a forward view examination. These results do not support the addition of routine right colon retroflexion to colonoscopy. ±×·¯³ª ¸î ³âÀÌ Áö³ª¼­ ÀϺ» ¹ßÇ¥ÀÚµéÀÌ ÀØÇôÁú ¹«·Æ, À§ AJG ÀúÀÚµéÀº ´ÙÀ½°ú °°ÀÌ »ó¹ÝµÇ´Â ³í¹® "Hewett DG, Rex DK. Miss rate of right-sided colon examination during colonoscopy defined by retroflexion: an observational study. Endoscopy 2007:39(Suppl 1):E175¡± µîÀ» °ÔÀçÇÏ¸ç ¸ÍÀå¿¡¼­ÀÇ ¹ÝÀü °üöÀÌ ¸Å¿ì Áß¿äÇÑ ¼ú±â¶ó°í ÁÖÀåÇϱ⠽ÃÀÛÇÕ´Ï´Ù. Right-sided colon retroflexion is generally achievable and safe in our hands. The yield is comparable to that expected from a second examination in the forward view. ÀÌ ¶§ºÎÅÍ DDW PG course¸¦ Æ÷ÇÔÇÑ ÀúÀÚµéÀÇ °­¿¬¿¡¼­´Â ¡°´ëÀå³»½Ã°æ °Ë»ç½ÃÀÇ ¸ÍÀå¿¡¼­ÀÇ ¹ÝÀü °üö¡±ÀÌ µîÀåÇϸç, ÀÌ ¼ö±â´Â ÀúÀÚµéÀÌ ¹ß°ßÇÑ ¸Å¿ì À¯¿ëÇÑ ¼ú±â·Î µÐ°©ÇÕ´Ï´Ù. ±×·¡¼­ ¿À´Ã³¯ ¿ì¸®µéÀº ¡°Rex DK. Retroflexion in colonoscopy: Why? Where? When? How? What value? Gastroenterology 2013;144:882-3¡±°ú °°Àº ±ÛµéÀ» ÀÐÀ¸¸ç, À̸¦ ¹Ì±¹¿¡¼­ °³¹ßµÈ À¯¿ëÇÑ ¼ú±â¶ó°í ¹è¿ì¸ç »ì¾Æ°©´Ï´Ù. ´Ã ±×·¸µíÀÌ »õ·Î¿î ÁÖÀåÀ» ÇÏ´Â ¿¬±¸ÀÚµéÀº ´ë°¡µé¿¡°Ô ¹«ÂüÈ÷ Áþ¹âÈ÷¸ç, ±× °¡Ä¡¸¦ ¾Æ´Â ÀϺΠ´ë°¡µéÀº ¿­¸Å±îÁö »©¾Ñ¾Æ°©´Ï´Ù.