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Á÷Àå¾ÏÀÇ ±ÙÄ¡Àû ¼ö¼ú ÈÄ º¸Á¶ È­Çйæ»ç¼±¿ä¹ý Postoperative Adjuvant Chemoradiotherapy in Rectal Cancer

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Àå¼¼°æ ( Chang Sei-Kyung ) 
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±èÁ¾¿ì ( Kim Jong-Woo ) 
Æ÷õÁß¹®ÀÇ°ú´ëÇб³ ºÐ´çÂ÷º´¿ø ¿Ü°ú
¿Àµµ¿¬ ( Oh Do-yeun ) 
Æ÷õÁß¹®ÀÇ°ú´ëÇб³ ºÐ´çÂ÷º´¿ø ³»°ú
Á¤¼Ò¿µ ( Chong So-Young ) 
Æ÷õÁß¹®ÀÇ°ú´ëÇб³ ºÐ´çÂ÷º´¿ø ³»°ú
½ÅÇö¼ö ( Shin Hyun-Soo ) 
Æ÷õÁß¹®ÀÇ°ú´ëÇÐ ¹æ»ç¼±Á¾¾çÇаú

Abstract

¸ñ Àû: Á÷Àå¾ÏÀ¸·Î ±ÙÄ¡Àû ¼ö¼ú ÈÄ º¸Á¶ È­Çйæ»ç¼±¿ä¹ýÀ» ½ÃÇà¹ÞÀº ȯÀÚµéÀÇ Ä¡·á½ÇÆÐ ¾ç»ó ¹× »ýÁ¸À² µîÀÇ Ä¡·á°á°ú¸¦ ÈÄÇâÀûÀ¸·Î È®ÀÎÇÔÀ¸·Î½á Á÷Àå¾Ï ȯÀÚÀÇ Ä¡·á¿¡¼­ ±ÙÄ¡Àû ¼ö¼ú ÈÄ º¸Á¶ È­Çйæ»ç¼±¿ä¹ýÀÇ ¿ªÇÒÀ» ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: Á÷Àå¾ÏÀ¸·Î ±ÙÄ¡Àû ¼ö¼úÀ» ½ÃÇàÇÏ°í ¼ö¼ú ÈÄ º¸Á¶ Ä¡·á¹æ¹ýÀ¸·Î È­Çйæ»ç¼±Ä¡·á¸¦ ½ÃÇà¹ÞÀº AJCC º´±â II±â¿Í III±â ȯÀÚ 46¸íÀ» ´ë»óÀ¸·Î ÇÏ¿´´Ù. º´±âº° ºÐÆ÷´Â T1, T2 º´±â´Â ¾ø¾ú°í T3 38¸í(82.6%), T4 8¸í(17.4%)À¸·Î ´ëºÎºÐ T3 º´±â¿´À¸¸ç, N0 12¸í(26.1%), N1 16¸í(34.8%), N2 18¸í(39.1%)À̾ú´Ù. º¸Á¶ È­Çпä¹ýÀº 40¸í¿¡¼­ 4ÁÖ °£°ÝÀ¸·Î 6ȸ¿¡ °ÉÃÄ 5-fluorouracil (5-Fu)¿Í leucovorinÀ» Á¤¸Æ ÁÖ»çÇÏ¿´°í 6¸í¿¡¼­´Â Uracil/Tegafur (UFT)¸¦ 6¢¦12°³¿ù°£ ¸ÅÀÏ °æ±¸ º¹¿ëÇÏ¿´´Ù. ¹æ»ç¼±Ä¡·á´Â °ñ¹Ý ³» ¿µ¿ª ¸²ÇÁÀýÀ» Æ÷ÇÔÇÏ´Â ºÎÀ§¿¡ 45 Gy¸¦ Á¶»çÇÑ ÈÄ ¿ø¹ßº´¼Ò°¡ ÀÖ¾ú´ø ºÎÀ§¸¦ Áß½ÉÀ¸·Î Á¶»ç¹üÀ§¸¦ Ãà¼ÒÇÏ¿© 5.4¢¦9 Gy¸¦ Ãß°¡Á¶»ç ÇÏ¿´´Ù. ÃßÀû°üÂû±â°£Àº 8¢¦75°³¿ùÀ̾ú°í Áß¾Ó°ªÀº 35°³¿ùÀ̾ú´Ù.

°á °ú: Àüü 46¸í Áß 17¸í(37%)¿¡¼­ Àç¹ßÀÌ °üÂûµÇ¾ú´Ù. ±¹¼Ò´Üµ¶½ÇÆд ¾ø¾ú°í ¿µ¿ª´Üµ¶½ÇÆÐ 1¸í(2.2%), ¿ø°Ý´Üµ¶½ÇÆÐ 13¸í(28.3%), ±¹¼Ò¿µ¿ª ¹× ¿ø°Ý½ÇÆÐ 3¸í(6.5%)À¸·Î ±¹¼Ò¿µ¿ª½ÇÆÐÀ²Àº 8.7%, ¿ø°Ý½ÇÆÐÀ²Àº 34.8%¿´´Ù. ÃÖÃÊ Ä¡·á½ÇÆÐ ºÎÀ§´Â °ñ¹Ý ³» ¿ø¹ßº´¼Ò ÁÖº¯ ºÎÀ§¿Í °ñ¹Ý ³» ¸²ÇÁÀýÀÌ °¢°¢ 3¸íÀ̾ú°í ¿¬°áºÎÀ§³ª ȸÀ½ºÎ¿¡¼­ ½ÇÆÐÇÑ °æ¿ì´Â ¾ø¾ú´Ù. ÃÖÃÊ ¿ø°Ý½ÇÆÐÀÇ ºÎÀ§´Â Æó, °£, »À ¼øÀ̾ú´Ù. Àüü 5³â »ýÁ¸À²°ú ¹«Àç¹ß »ýÁ¸À²Àº °¢°¢ 51.5%¿Í 58.7%¿´´Ù. N º´±â¿¡ µû¸¥ »ýÁ¸À²Àº N0, N1, N2¿¡¼­ °¢°¢ 100%, 53.7%, 0%¿´°í(p=0.012), ¹«Àç¹ß »ýÁ¸À²Àº °¢°¢ 100%, 47.6%, 41.2%¿´´Ù(p=0.009). Á¾¾çÀÇ À§Ä¡¿¡ µû¸¥ ¹«Àç¹ß »ýÁ¸À²Àº »óºÎ, Áß°£ºÎ, ÇϺο¡¼­ °¢°¢ 55.0%, 78.5%, 31.2%¿´´Ù(p=0.006). ´Ùº¯·® ºÐ¼®¿¡¼­ 5³â Àüü »ýÁ¸À²¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â À¯ÀÇÇÑ ¿¹ÈÄÀÎÀÚ´Â N º´±â¿´°í(p=0.012), ¹«Àç¹ß »ýÁ¸À²¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ¿¹ÈÄÀÎÀÚ´Â N º´±â¿Í(p=0.001) Á¾¾çÀÇ À§Ä¡¿´´Ù(p=0.006). ¼ö¼úÀ» ¿äÇÏ´Â Àå °ü·Ã ÈÄÀ¯ÁõÀº 3¸í(6.5%)¿¡¼­ ¹ß»ýÇÏ¿´´Ù.

°á ·Ð: Á÷Àå¾ÏÀÇ Ä¡·á¿¡¼­ ±ÙÄ¡Àû ¼ö¼ú ÈÄ º¸Á¶ È­Çйæ»ç¼±¿ä¹ýÀº ±¹¼Ò¿µ¿ªÁ¦¾î Ãø¸é¿¡¼­´Â È¿°úÀûÀ̾úÀ¸³ª ¿ø°ÝÁ¦¾î¿¡ ´ëÇÑ È¿°ú´Â ºÎÁ·ÇÏ´Ù°í »ý°¢µÈ´Ù. ÇâÈÄ »ýÁ¸À²À» ´õ¿í Çâ»ó½ÃÅ°±â À§Çؼ­´Â ¿ø°Ý½ÇÆи¦ °¨¼Ò½ÃÅ°·Á´Â ³ë·ÂÀÌ ½ÃµµµÇ¾î¾ß µÉ °ÍÀ¸·Î »ý°¢ÇÑ´Ù.

Purpose: To evaluate the role of postoperative adjuvant chemoradiotherapy in rectal cancer, we retrospectively analyzed the treatment outcome of patients with rectal cancer taken curative surgical resection and postoperative adjuvant chemoradiotherapy.

Materials and Methods: A total 46 patients with AJCC stage II and III carcinoma of rectum were treated with curative surgical resection and postoperative adjuvant chemoradiotherapy. T3 and T4 stage were 38 and 8 patients, respectively. N0, N1, and N2 stage were 12, 16, 18 patients, respectively. Forty patients received bolus infusions of 5-fluorouracil (500 mg/m2/day) with leucovorin (20 mg/m2/day), every 4 weeks interval for 6 cycles. Oral Uracil/Tegafur on a daily basis for 6¢¦12 months was given in 6 patients. Radiotherapy with 45 Gy was delivered to the surgical bed and regional pelvic lymph node area, followed by 5.4¢¦9 Gy boost to the surgical bed. The follow up period ranged from 8 to 75 months with a median 35 months.

Results: Treatment failure occurred in 17 patients (37%). Locoregional failure occurred in 4 patients (8.7%) and distant failure in 16 patients (34.8%). There was no local failure only. Five year actuarial overall survival (OS) was 51.5% and relapse free survival (RFS) was 58.7%. The OS and RFS were 100%, 100% in stage N0 patients, 53.7%, 47.6% in N1 patients, and 0%, 41.2% in N2 patients (p=0.012, p=0.009). The RFS was 55%, 78.5%, and 31.2% in upper, middle, and lower rectal cancer patients, respectively (p=0.006). Multivariate analysis showed that N stage (p=0.012) was significant prognostic factor for OS and that N stage (p=0.001) and location of tumor (p=0.006) were for RFS. Bowel complications requiring surgery occurred in 3 patients.

Conclusion: Postoperative adjuvant chemoradiotherapy was an effective modality for locoregional control of rectal cancer. But further investigations for reducing the distant failure rate are necessary because distant failure rate is still high.

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Á÷Àå¾Ï;±ÙÄ¡Àû ¼ö¼ú;È­Çйæ»ç¼±¿ä¹ý
Rectal cancer;Radical surgery;Concurrent chemoradiotherapy

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