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[MD FOCUS£ß1]Definition
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Àü¸³¼±¾ÏÀº ±¸¹Ì¿¡¼­´Â ³²¼º¿¡°Ô °¡Àå ÈçÇÑ ¾Ç¼ºÁ¾¾çÀ̸ç, 2008³â ±¹°¡¾Ïµî·ÏÅë°è¿¡ µû¸£¸é Çѱ¹¿¡¼­´Â À§¾Ï, Æó¾Ï, ´ëÀå¾Ï, °£¾Ï¿¡ ÀÌ¾î ³²¼º¿¡°Ô 5¹øÂ°·Î ÈçÇÑ ¾Ç¼ºÁ¾¾çÀÌ´Ù. ÇÏÁö¸¸ Áö³­ 10³â°£ ¿¬Æò±Õ 13.5%ÀÇ Áõ°¡À²À» º¸¿© 10³â Àü¿¡ ºñÇØ ¿¬°£ ¹ß»ý·üÀÌ 3¹è °¡±îÀÌ Áõ°¡ÇÏ¿© °©»ó¼±¾Ï¿¡ ÀÌ¾î µÎ ¹øÂ°·Î ºü¸¥ Áõ°¡À²À» º¸À̰í ÀÖ´Ù. ÀÌ·¯ÇÑ ºü¸¥ Áõ°¡´Â Àα¸ÀÇ °í·ÉÈ­, ½Ä»ýȰÀÇ ¼­±¸È­ À̿ܿ¡ Àü¸³¼±Æ¯ÀÌÇ׿ø(prostate-specific antigen, PSA)ÀÇ µµÀÔ°ú Àü¸³¼± ÁúȯÀÇ °ü½ÉÀÇ Áõ°¡°¡ ±â¿©ÇÏ´Â °ÍÀ¸·Î ¿©°ÜÁø´Ù.
±Ù·¡¿¡´Â PSA¸¦ ÀÌ¿ëÇÑ ¼±º°°Ë»ç°¡ ÀϹÝÈ­µÇ¸é¼­ Á¶±â¹ß°ßÀÌ ´Ã¾î³ª°í, ÀÓ»óÀûÀ¸·Î ÀÇ¹Ì ¾ø´Â ¾Ï¿¡ ´ëÇÑ °úµµÇÑ Ä¡·áÀÇ ¿ì·Á°¡ Á¦±âµÇ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ÀÌÀ¯·Î´Â ±¹¼Ò Àü¸³¼±¾Ï ȯÀÚ¸¦ Àç¹ß ¹× Áúº´Æ¯ÀÌ »ç¸ÁÀÇ À§Ç輺¿¡ µû¶ó ºÐ·ùÇÏ¿© Ä¡·á¹æ¹ýÀ» ´Þ¸® ¼±ÅÃÇÏ·Á´Â ³ë·ÂµéÀÌ ½ÃµµµÇ¾ú´Ù. ¿©±â¼­´Â ±¹¼Ò Àü¸³¼±¾Ï ȯÀÚ¿¡¼­ ÀúÀ§Çè Àü¸³¼±¾ÏÀÇ ºÐ·ù¹æ¹ý°ú Á¤ÀÇ, ´ëÇ¥ÀûÀÎ Áø·áÁöħ¿¡¼­ »ç¿ëÇÏ´Â ºÐ·ù¹ý¿¡ ´ëÇØ ´Ù·ç°íÀÚ ÇÑ´Ù.

¥± ºÐ·ù¹æ¹ý
Ä¡·á Àü¿¡ ȯÀڷκÎÅÍ ¾ò¾îÁø Á¤º¸¸¦ ÀÌ¿ëÇÏ¿© Ä¡·á ÈÄ °á°ú¸¦ ¿¹ÃøÇÏ´Â ÀÏÀº Ä¡·á ÈÄÀÇ °á°ú¸¦ ÅëÇÑ ¿¹Ãø°ú´Â ¶Ç ´Ù¸¥ Àǹ̸¦ °¡Áø´Ù. Áï, ÀÓ»óÀû Àǹ̰¡ ÀÛÀº ¾Ï¿¡¼­ ºÒÇÊ¿äÇÑ Ä¡·á¸¦ ÇÇÇϰųª ±¹¼ÒÀû Ä¡·á¸¸À¸·Î´Â Ä¡·á È¿°ú°¡ ³·Àº ȯÀÚ¿¡¼­´Â º´ÇÕÄ¡·á¸¦ °í·ÁÇÒ ¼ö ÀÖ´Ù. ÀÌ·¯ÇÑ Àǹ̿¡¼­ ¡®Low-Risk¡¯ÀÇ Àǹ̴ ÀÓ»óÀûÀ¸·Î Àǹ̰¡ ÀÛÀº ¾ÏÀ» ÁöĪÇÏ´Â °ÍÀÌ º¸´Ù ÀûÀýÇÒ ¼ö ÀÖ´Ù. ±×·¯³ª 2003³â D'Amico µîÀº ±¹¼Ò Àü¸³¼±¾Ï ȯÀÚÀÇ Áúº´Æ¯ÀÌ »ç¸Á·ü¿¡ µû¶ó À§Çèµµ¸¦ ºÐ·ùÇϸ鼭 ÀúÀ§Ç豺À» PSA¡Â10ng/mL, Gleason score¡Â6, cT1c or T2a on 2002 AJCC·Î ±ÔÁ¤ÇÏ¿´´Ù. µû¶ó¼­ ¾Õ¼­ ÁöĪÇÑ ÀǹÌÀÇ ¾ÏÀº ¡®Insignificant¡¯ ¶Ç´Â ¡®Indolent¡¯¶ó´Â ¿ë¾î·Î ºÒ¸®°í ÀÖ´Ù.
1. Kattan nomogram
¼ú Àü Á¤º¸¸¦ ¼ú ÈÄ º´¸®ÇÐÀû °á°ú, Àç¹ß ¹× Áúº´Æ¯ÀÌ »ç¸Á·üÀ» ¿¹ÃøÇÒ ¼ö ÀÖÀ¸¸ç, 1977³â óÀ½ µîÀåÇÏ¿© Áö¼ÓÀûÀ¸·Î update µÇ¾ú´Ù. Memorial Sloan-Kettering Cancer Center Hompage¸¦ ÅëÇØ nomogramÀ» ÀÌ¿ëÇÒ ¼ö ÀÖ´Ù(http://www.mskcc.org/nomograms/prostate/preTeatment.aspx). Nomogram¿¡´Â PSA, ³ªÀÌ, biopsy Gleason grade(primary, secondary), 1992/1997 clinical stage, No. of positive/negative biopsy cores, neoadjuvant/adjuvant treatment ¿Ü¿¡µµ prostate volume, No. of gramÀº ¡®indolent¡¯ cancerÀÇ °¡´É¼ºÀ» Á¦½ÃÇϰí Àִµ¥, ¿©±â¼­ »ç¿ëµÈ Á¤ÀÇ´Â Ohori µî¿¡ ÀÇÇÑ tumor volume(0.5 cc, confined to the prostate, no Gleason pattern 4 or 5¸¦ µû¸£°í ÀÖ´Ù.

2. D' Amico risk stratification
2003³â ¹ßÇ¥µÇ¾î ±¹¼Ò Àü¸³¼±¾ÏÀÇ À§Çèµµ ºÐ·ù¿¡ À־ ÇöÀç °¡Àå ´ëÁßÀûÀÎ ºÐ·ù·Î ¹Þ¾Æµé¿©Áö°í ÀÖ´Ù. Ãʱ⠹ßÇ¥ ´ç½Ã¿¡´Â ÀúÀ§Ç豺Àº PSA¡Â10ng/mL, Gleason score¡Â6, cT1c or T2a, ÁßÀ§Ç豺Àº 10ng/mL < PSA ¡Â 20ng/mL, Gleason score 7, cT2b, °íÀ§Ç豺Àº PSA > 20ng/mL, Gleason score Guidelines´Â À̸¦ ¹ÙÅÁÀ¸·Î ±¹¼Ò Àü¸³¼±¾ÏÀÇ À§Çèµµ¸¦ ºÐ·ùÇϰí ÀÖ´Ù. ÇÏÁö¸¸ D'AmiciÀÇ ºÐ·ù¹ýÀº ¡®insignificant¡¯ ¶Ç´Â ¡®indolent¡¯¿Í´Â Àǹ̰¡ ´Ù¸£´Ù°í ÇϰڴÙ.

3. The University of California, San Francisco-Cancer of the Prostate Risk Assessment(UCSF-CAPRA score)
2005³â Cooperberg µî¿¡ ÀÇÇØ ¹ßÇ¥µÇ¾úÀ¸¸ç PSA(0-4Á¡), Gleason score(0-3), cT stage(0-1), ³ªÀÌ(0-1), positive percent of biopsy(0-1)¸¦ Åä´ë·Î Çϸç, Á¡¼öÀÇ ÇÕÀº 0-10Á¡À¸·Î ±× Á¡¼ö°¡ 2Á¡ ¿Ã¶ó°¥ ¶§¸¶´Ù »ýÈ­ÇÐÀû Àç¹ß À§ÇèÀÌ µÎ ¹è¾¿ Áõ°¡ÇÑ´Ù.

4. Systemic biopsy results
1994³â Epstein µîÀº ¡®Insignificant¡¯ tumor(organ-confined tumor, tumor volume <0.2mL, pathologic Gleason sum¡Â6)À» ¿¹ÃøÇϱâ À§ÇÑ modelÀ» Á¦½ÃÇß´Ù. no Gleason grade of 4 or 5, either(1) PSA density¡Â0.1ng/mL/g, fewer then 3 biopsy cores(minimum of 6 cores obtained), no core with more then 50% involvement or (2) PSA density ¡Â 0.15ng/mL/g, cancer<3mm on only 1prostate biopsy sample(minimum of 6 cores). 1996³â Goto µîÀº Ohori Á¤ÀÇ¿¡ µû¶ó ¡®indolent¡¯ cancer¸¦ ¿¹ÃøÇÏ´Â ¸ðµ¨À» º¸°íÇÏ¿´°í, 1998³â Epstein µîµµ °°Àº Á¤ÀÇ¿¡ µû¸¥ ¸ðµ¨·Î free/total serum PSA ratio ¡Ã 0.15, favorable needle biopay findings(fewer then 3 core involved, none of the cores with more then 50% tumor involvement, Gleason sum <6)¸¦ º¸°íÇÏ¿´´Ù.
5. Nomogram to Predict Insignificant Prostate Cancer at Radical Prostatectomy in Korean Men: AMulti-Center Study
ÃÖ±Ù Chung µîÀº Àü¸³¼±¾ÏÀ¸·Î ¼ö¼úÀ» ¹ÞÀº Çѱ¹Àο¡°Ô ¡®insignificant¡¯ tumor(defined as tumor volume < 0.5cc, organ confined disease, Gleason score<7)¸¦ ¿¹ÃøÇÏ´Â ¼ú Àü nomogramÀÌ º¸°íµÇ¾ú´Ù. NomogramÀº PSA, prostate volume on transrectal ultrasonography(TRUS), positive core ratio(No. of positive cores / No. of cores taken), maximum % of tumor in any core(greatest tumor % among positive cores), Gleason scure, cT stagef¸¦ Æ÷ÇÔÇÑ´Ù.

¥². Guideline¿¡¼­ »ç¿ëÇÏ´Â ºÐ·ù¹ý
1. NCCN Clinical Practice Guidelines in Oncology V.3.2010
Very low(insignificant prostae cancer according to Epstein criteria)
¡Ü cT1c
¡Ü Gleason score ¡Â 6
¡Ü Fewer than 3 biopsy cores positive, ¡Â 50% cancer in each core
¡Ü PSA density < 0.15ng/mL/g

Low
¡Ü cT1-T2
¡Ü Gleason score 2-6
¡Ü PSA < 10ng/mL

2. EAU Guidelines, 2010
Low-risk, localized prostate cancer
¡Ü cT1-T2a
¡Ü Gleason score 2-6
¡Ü PSA < 10ng/mL

3. AUA Guideline, 2007(Reviewed and validity confirmed 2009)
Low risk
¡Ü cT1c or T2a
¡Ü Gleason score ¡Â 6
¡Ü PSA ¡Â 10ng?/mL

¥³. °á·Ð
¾ÆÁ÷±îÁö Çѱ¹Àο¡¼­ ÃàÀûµÈ ÀÚ·áÀÇ ºÎÁ·, ÇâÈÄ ¹ýÀûÀÎ ¹®Á¦ ¹ß»ý¿¡ ´ëÇÑ ¹®Á¦, ¹®È­ÀûÀÎ ÀÌÀ¯ µîÀ¸·Î ¡®Watchful waiting¡¯À̳ª ¡®Active surveillance¡¯¸¦ ±ÇÀ¯¹Þ°Å³ª, ¼±ÅÃÇϴ ȯÀÚ´Â °ÅÀÇ ¾ø´Ù. ±×·¯³ª PSA¸¦ ÀÌ¿ëÇÑ ¼±º°°Ë»ç°¡ ÀϹÝÈ­µÊ¿¡ µû¶ó, ÀúÀ§Çè ¶Ç´Â ¡®insignificant¡¯ tumorÀÇ ºóµµ´Â Áö¼ÓÀûÀ¸·Î Áõ°¡Çϰí ÀÖÀ¸¸ç, ¼ö¼úÀû Ä¡·á¿¡ µû¸¥ º´¸®ÇÐÀû °á°ú ¹× ¿¹ÈÄ¿¡ ´ëÇÑ º¸°íµéÀÌ ÀÕµû¸£°í ÀÖ´Ù. ÀÌ·¯ÇÑ °á°ú¸¦ Åä´ë·Î Çѱ¹Àο¡ ÀûÇÕÇÑ guidelineÀÌ Á¦½ÃµÇ¾î¾ß ÇϰڴÙ.



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