[Long segment Barrett esophagus]
2014³â 5¿ù 23ÀÏ ÀϺ»¿¡¼ ¹Ù·¿ ½ÉÆ÷Áö¾öÀÌ ¿¸³´Ï´Ù. Àú´Â Long segment Barrett esophagus¿¡ ´ëÇÏ¿© case-based discussionÀ» ÇÒ ¿¹Á¤ÀÔ´Ï´Ù.
Conceptually, endoscopic anatomy of the EG junction is easy. Everything must be very close. The primary landmark for esophagogastric junction should be clear, and it is the proximal margin of the gastric folds.
However, in the real endoscopy, it is not so easy. For example, when the proximal margin of the gastric fold is not clear, we have to use the secondary landmark. The palisading zone.
Histological definition of Barrett esophagus is relatively simple for esophagectomy specimen. Esophageal mucosa must be changed into columnar epithelium with Goblet cell metaplasia. However, endoscopic diagnosis of Barrett esophagus is not so simple.
Prevalence of Barrett esophagus in Korea is not clear because of the definition problem. This is the experience of Samsung Medical Center. 0.22 percent.
Do you think Barrett esophagus is increasing in Korea? It is not clear, but in a study from The Catholic University of Korea, the prevalence of Barrett esophagus is slightly increasing.
The most important clinical significance of Barrett esophagus is that it is a precursor lesion of esophageal adenocarcinoma. However, there is no epidemiological evidence that the esophageal adenocarcinoma is increasing now. We have only one Barrett adenocarcinoma a year, usually, at Samsung Medical Center.
Where are we now? In the far future, it may increase, but I am not sure. It may or may not increase.
This is a typical case of long segment Barrett esophagus. I made the diagnosis in 2003. There was no histological evidence of dysplasia. I have done endoscopy every year. Sometimes I took some biopsies. The patients are taking PPI for a long time. Half dose every day recently. Without PPI, he has some reflux symptoms.
I think many questions can be raised. How many biopsies for initial diagnosis? How often would you do follow up endoscopy? Would you take biopsy in every endoscopic examinations? Would you give PPI for the prevention of Barrett progression? I hope to hear a lot of ideas from all of you.
[Summary of the special lecture by professor Sugiyama]
Toshiro Sugiyama (Toyama University) ¼±»ý´ÔÀÇ Æ¯°ÀÌ ÀÖ¾ú½À´Ï´Ù. Á¦¸ñÀº "A new strategy for prevention of gastric cancer and the related issues in Japan"À̾ú½À´Ï´Ù. ¿ä¾àÇÕ´Ï´Ù.
"ÀϺ»ÀÇ ¿©·¯ ¿¬±¸¸¦ Á¾ÇÕÇϸé Hp°¨¿°ÀÚ´Â 75¼¼±îÁö »ýÁ¸½Ã 8%¿¡¼ À§¾ÏÀÌ ¹ß»ýÇÕ´Ï´Ù. Á¦±ÕÄ¡·á°¡ À§¾ÏÀ» »ó´çºÎºÐ ¸·À» ¼ö ÀÖ´Ù´Â ¿¬±¸ °á°úµµ ¸¹½À´Ï´Ù. ÀÌ·¯ÇÑ ÀڷḦ ¹ÙÅÁÀ¸·Î ÀϺ» Á¤ºÎ´Â 2013³â 2¿ù Hp Á¦±ÕÄ¡·áÀÇ ¹üÀ§¸¦ Hp ¾ç¼º À§¿°±îÁö ³ÐÇû½À´Ï´Ù (All infected persons were permitted to be eradicated under government health care system). ÀϺ» Á¤ºÎ¿¡¼´Â µÎ °¡Áö Á¦ÇÑÀ» °É¾ú½À´Ï´Ù.
(1) ¹Ýµå½Ã ³»½Ã°æ °Ë»ç¸¦ ¹Þ¾Æ¾ß ÇÑ´Ù. Diagnosis of of gastritis by endoscopy
(2) Hp°¡ ÀÎÁ¤µÈ °Ë»ç¸¦ ÅëÇÏ¿© È®ÀεǾî¾ß ÇÑ´Ù. Diagnosis of Hp infectionABC screeningÀ¸·Î risk straficationÀ» ÇÏ°í ±×¿¡ µû¶ó screening °£°ÝÀ» Á¤ÇÒ ¼ö ÀÖ½À´Ï´Ù. ABC screeningÀ¸·Î À§¾Ï¹ß»ý·üÀ» ¿¹ÃøÇÒ ¼ö Àֱ⠶§¹®ÀÔ´Ï´Ù. ABC ±×·ì¿¡ µû¸¥ À§¾Ï ¹ß»ý·üÀº A: 0%, B: 0.11%, C: 0.24%, D: 1.31% ÀÔ´Ï´Ù. 40¼¼ ÀÌ»ó ÀϺ»ÀÎ ´ë»ó ¿¬±¸¿¡ ÀÇÇϸé ABC screening¿¡¼ A°¡ 61.0%¸¦ Â÷ÁöÇÏ°í ÀÖ½À´Ï´Ù (B´Â 5.4%, C´Â 26.1%, D´Â 7.4%). A¿¡ ÇØ´çÇÏ´Â »ç¶÷Àº screeningÀ» ÇÏÁö ¾Ê´Â´Ù°í Çϸé cost-effectiveness´Â ¸Å¿ì ÁÁ¾ÆÁý´Ï´Ù.
ÇöÀç °¡Àå Å« ¹®Á¦´Â Á¦±ÕÄ¡·á°¡ ¾ÏÀ» ¿Ïº®È÷ ¿¹¹æÇÏÁö ¸øÇÑ´Ù´Â °ÍÀÔ´Ï´Ù (Development of gastric cancer is not zero after eradication). º¸´Ù ÁÁÀº marker°¡ ÇÊ¿äÇÑ »óȲÀÔ´Ï´Ù. À̸¦ À§ÇÏ¿© ¸¹Àº ÀϺ» ¿¬±¸ÀÚµéÀÌ epigenetic change µîÀ» °ü½ÉÀÖ°Ô ¿¬±¸ÇÏ°í ÀÖ½À´Ï´Ù. Sugiyama ¹Ú»çÆÀÀº genomewide screeningÀ» ÅëÇØ EMX1, NKX6-1µîÀÇ È常¦ ¹ß±¼Çß½À´Ï´Ù (Nanjo & Sugiyama. Gastric Cancer 2012:15;382)
ÀÌ·¯ÇÑ ³ë·ÂÀ» ÅëÇÏ¿© ÀϺ»ÀÇ»çµéÀº À§¾Ï»ç¸Á·üÀ» 10³â ÈıîÁö 78%°¡·® ÁÙÀÏ ¼ö Àֱ⸦ ±â´ëÇÏ°í ÀÖ½À´Ï´Ù."
ABC screening¿Í °ü·ÃµÈ ³»¿ëÀ» ´Ù½Ã Á¤¸®ÇÏ¸é ¾Æ·¡¿Í °°½À´Ï´Ù. ¿©±â¼ ³»½Ã°æ °£°ÝÀº Á¦±ÕÄ¡·á¸¦ ½ÃÇàÇÏ°í Á¦±ÕÀÌ µÇ¾úÀ½À» È®ÀÎÇÑ ÈÄÀÇ °£°ÝÀ» ¸»ÇÏ´Â °ÍÀÔ´Ï´Ù (À§ÀÇ °ÀÇ È¸é ÂüÁ¶). ÀϺ» Á¤ºÎ¿¡¼´Â "Á¦±ÕÄ¡·á¸¦ Çã¿ëÇÑ´Ù"±îÁö¸¸ Á¤ÇسõÀº °Í °°½À´Ï´Ù. ABC screening¿¡ µû¸¥ °Ë»ç°£°Ý Á¶Á¤ µîÀº ¾ÆÁ÷ ÀϺ» Çа迡¼ ³íÀǵǴ Á¤µµÀÔ´Ï´Ù. ÀϺ»¿¡¼ À§³»½Ã°æÀº 13,000¿£ÀÎ ¸ð¾çÀÔ´Ï´Ù. ¿ì¸® µ·À¸·Î´Â ¾à 14¸¸¿ø.
Group | Á¤ÀÇ | ¿¬°£À§¾Ï¹ß»ý·ü | ºñÀ² | ³»½Ã°æ °£°Ý |
A | HP-, PG- | 0% | 61.0% | No screening |
B | HP+, PG- | 0.11% | 5.4% | 3-5 yr (after eradication) |
C | HP+, PG+ | 0.24% | 26.1% | 3 yr (after eradication) |
D | HP-, PG+ | 1.31% | 7.4% | 1 yr |
Ư°¿¬ÀÚ Sugiyama ¼±»ý´Ô°ú ÇÔ²²