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T2, T3 ÇϺÎÁ÷Àå¾ÏÀÇ ¼ö¼ú Àü ¹æ»ç¼±Ä¡·á È¿°ú Effects of Preoperative Radiotherapy for T2, T3 Distal Rectal Cancer

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°­±â¹®/Ki Mun Kang ÃÖº´¿Á/ÀåÈ«¼®/°­¿µ³²/ä±Ô¿µ/ÃÖÀϺÀ/Byung Ock Choi/Hong Seok Jang/Young Nam Kang/Gyu Young Chai/Ihl Bohng Choi

Abstract

¸ñÀû: T2, T3 ÇϺÎÁ÷Àå¾Ï¿¡¼­ Ç×¹® °ý¾à±Ù º¸Àü¼úÀ» À§ÇÑ ¼ö¼ú Àü ¹æ»ç¼±Ä¡·á¸¦ ½ÃÇàÇÏ¿© ±×¿¡ µû¸¥ È¿°ú¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: 1995³â 11¿ùºÎÅÍ 1997³â 6¿ù±îÁö ÇϺΠÁ÷Àå¾ÏÀ¸·Î Áø´Ü¹Þ°í ¼ö¼ú Àü ¹æ»ç¼±Ä¡·á ÈÄ Ç×¹® °ý¾à±Ù º¸Á¸¼úÀ» ½ÃÇàÇÑ 15·Ê¸¦ ´ë»óÀ¸·Î ÇÏ¿´´Ù. T2°¡ 7·Ê, T3´Â 8·Ê¿´´Ù. ¹æ»ç¼±Ä¡·á´Â ¼±Çü°¡¼Ó±â 6 §Æ¿Í 15 §Æ X-ray¸¦
ÀÌ¿ëÇÏ¿© ÁÖ
5ȸ, 1ȸ 1.8 §í·Î ÃÑ Á¶»ç¼±·®Àº 45¡­50.4 §í±îÁö Á¶»çÇÏ¿´´Ù(Áß¾Ó¼±·® : 50.4 §í). Ç×¹® °ý¾à±Ù º¸Á¸¼úÀº ¹æ»ç¼±Ä¡·á ÈÄ 4¡­6ÁÖ µÚ¿¡ ½ÃÇàÇÏ¿´´Ù. ÃßÀû°üÂû±â°£Àº 16¡­37°³¿ùÀ̾ú°í Áß¾Ó°ªÀº 22°³¿ùÀ̾ú´Ù.

°á°ú: 1·Ê(6.7%)¿¡¼­ ¼ö¼ú ÈÄ º´¸®ÇÐÀûÀ¸·Î º´º¯ÀÇ ¿ÏÀü ¼Ò½ÇÀ» º¸¿´´Ù. ¼ö¼ú Àü ÀÓ»ó ¼Ò°ß°ú ¼ö¼ú ÈÄ º´¸®ÇÐÀû ¼Ò°ßÀ» ºñ±³½Ã, Tº´±â´Â 15·Ê Áß 11·Ê(73.3%)¿¡¼­ º´±â°¨¼Ò¸¦ º¸¿´À¸¸ç ¸²ÇÁÀý ÀüÀÌ°¡ °üÂûµÇ¾ú´ø 5·Ê Áß 2·Ê¿¡¼­ ¸²ÇÁÀýÀÌ °üÂûµÇÁö ¾Ê¾Ò´Ù.
Ä¡·áµ¿¾È¿¡ º´º¯ÀÌ ÁøÇàµÈ °æ¿ì´Â ¾ø¾ú´Ù. ±¹¼Ò Àç¹ßÀº 2·Ê(13.3%)·Î ¹æ»ç¼±Ä¡·á ÈÄ 7°³¿ù, 17°³¿ù¿¡ °¢°¢ ¹ß»ýÇÏ¿´À¸¸ç ±× Áß 1¸íÀº ¹æ»ç¼±Ä¡·á ÈÄ 30°³¿ù ¶§ ¿ø°ÝÀüÀ̸¦ º¸¿´´Ù. ÇÕº´ÁõÀ¸·Î Grade 3 ¶Ç´Â 4´Â ¾ø¾ú´Ù.

°á·Ð: T2, T3 ÇϺÎÁ÷Àå¾Ï¿¡¼­ Ç×¹® °ý¾à±Ù º¸Á¸¼úÀ» À§ÇÑ ¼ö¼ú Àü ¹æ»ç¼±Ä¡·á°¡ ºñ±³Àû ¾ÈÀüÇÏ°í º´º¯À» ÁÙÀ̴µ¥ È¿°úÀûÀÎ Ä¡·á¹æ¹ýÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.

Purpose: Preoperative radiotherapy has been used to induce tumor regression and allow complete resection of rectal cancer with a sphincter preservation surgery. This study was performed to determine the effectiveness of preoperative
radiotherapy
for T2, T3 distal rectal carcinoma.

Materials and Methods: From November 1995 to June 1997, fifteen patients with invasive distal rectal cancer were treated with preoperative radiotherapy followed by sphincter preservation surgery. Classification by preoperative T stage
consisted
of 7 T2 and 8 T3 tumors. Radiation therapy was delivered with 6 §Æ and 15 §Æ linear accelerator, at 1.8 §í fractions for 5 days per week. Total radiation doses were 45 §í to 50.4 §í (median : 50.4 §í). Sphincter preservation
surgery was performed 4¡­6 weeks after the completion of radiotherapy. Median follow-up was 22 months (range : 16¡­37 months).

Results: One patient (6.7%) had a complete pathologic response. Comparing the stage at the diagnostic workup with the pathologic stage, tumor downstaging of T stages occurred in 11 of 15 patients (73.3%) and N1 stages occurred
in
2 of
5 patients (40%). No patient developed progressive disease undergoing treatment. Two patients suffered local recurrence at 7 and 20 months, and one a distant metastasis at 30 months. No grade 3 or 4 toxicity was observed.

Conclusion: Our experience suggests that preoperative radiotherapy followed by sphincter preservation surgery is well tolerated, and can significantly reduce the tumor burden for T2, T3 distal rectal cancer.

Å°¿öµå

¼ö¼ú Àü ¹æ»ç¼±Ä¡·á; ÇϺÎÁ÷Àå¾Ï; Preoperative radiotherapy; Distal rectal cancer;

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