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ÀڱðæºÎ¾ÏÀÇ °í¼±·®·ü ±ÙÁ¢Ä¡·á : ºÐÇÒ¼±·®¿¡ µû¸¥ °á°ú ºñ±³ High-Dose-Rate Brachytherapy for Uterine Cervical Cancer : The Results of Different Fractionation Regimen

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À±¿ø¼·/Won Sup Yoon ±èÅÂÇö/¾ç´ë½Ä/ÃÖ¸í¼±/±èö¿ë/Tae Hyun Kim/Dae Sik Yang/Myung Sun Choi/Chul Yong Kim

Abstract

¸ñÀû: ÀڱðæºÎ¾ÏÀÇ °í¼±·®·ü ±ÙÁ¢Ä¡·á´Â °¢ ±â°ü¸¶´Ù ºÐÇÒ¼±·®ÀÌ ¸Å¿ì ´Ù¾çÇÏ°Ô »ç¿ëµÇ°í ÀÖ°í °¢ ºÐÇÒ¼±·®¿¡ µû¸¥ Ä¡·á °á°ú°¡ ÀÓ»óÀûÀ¸·Î ºñ±³µÈ ÀûÀÌ Àû¾ú´ø ¹Ù ÀúÀÚµéÀº ÀڱðæºÎ¾Ï ȯÀÚ¿¡¼­ °í¼±·®·ü ±ÙÁ¢Ä¡·áÀÇ ºÐÇÒ¼±·®¿¡ µû¸¥ ±¹¼ÒÁ¦¾îÀ²°ú ÇÕº´Áõ
¹ß»ýÀ»
ºñ±³ÇÏ¿© ÀûÁ¤ÇÑ ºÐÇÒ¼±·®¿¡ ´ëÇØ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: 1992³â 11¿ùºÎÅÍ 1998³â 3¿ù±îÁö ÀڱðæºÎ¾ÏÀ¸·Î Áø´Ü ÈÄ ¹æ»ç¼±Ä¡·á¸¦ ½ÃÇàÇÑ 224¸íÀ» ´ë»óÀ¸·Î ÇÏ¿´´Ù. A±ºÀº 122¸í(¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á 67¸í, ±ÙÄ¡Àû ¹æ»ç¼±Ä¡·á 55¸í)À¸·Î ¿ÜºÎ¹æ»ç¼± Ä¡·á ÈÄ °í¼±·®·ü ±ÙÁ¢Ä¡·áÀÇ ºÐÇÒ¼±·®À» line-A
(¼±¿øÀ¸·ÎºÎÅÍ ¹Ý°æ 2 §¯¸¦ ÀÌÀº µî·®¼±)¿¡ 3 §í¸¦ ÁÖ´ç 3ȸ¾¿ 6¡­10ȸ Á¶»çÇÑ ±ºÀ̾ú°í B±º´Â 102¸í(¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á 49¸í, ±ÙÄ¡Àû ¹æ»ç¼±Ä¡·á 53¸í)À¸·Î ¿ÜºÎ¹æ»ç¼± Ä¡·á°¡ ½ÃÇàµÈ ÈÄ ºÐÇÒ¼±·®À» line-A¿¡ 4 ¶Ç´Â 4.5 §í¸¦ ÁÖ´ç 2ȸ¾¿ 6¡­8ȸ Á¶»çÇÑ ±ºÀ̾ú´Ù.
¿ÜºÎ¹æ»ç¼±Ä¡·á´Â 10 §Æ X-¼±À» ÀÌ¿ëÇÏ¿© Àü°ñ¹ÝºÎ¿¡ 45¡­54 §í (Áß¾Ó°ª 54 §í)¸¦ Á¶»çÇÏ¿´´Ù. °í¼±·®·ü ±ÙÁ¢Ä¡·á´Â À̸®µð¿ò(iridium)-192¸¦ »ç¿ëÇÏ¿´´Ù. ÇÕº´ÁõÀº RTOG morbidity grading system¿¡ µû¶ó grade 1¿¡¼­ 5±îÁö ³ª´©¾î¼­ Æò°¡ÇÏ¿´´Ù.

°á°ú: A±º°ú B±ºÀÇ 5³â ±¹¼ÒÁ¦¾îÀ²Àº °¢°¢ 80%, 84%¿´°í(p=0.4523) B±º¿¡¼­ ´õ ³ôÀº ±¹¼ÒÁ¦¾îÀ²À» º¸¿´´Ù. ±ÙÄ¡Àû ¹æ»ç¼±Ä¡·á±º¿¡¼­´Â A±º°ú B±ºÀÇ 5³â ±¹¼ÒÁ¦¾îÀ²ÀÌ °¢°¢ 62.9%, 76.9% (p=0.2557), ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á±º¿¡¼­´Â A±º°ú B±ºÀÇ 5³â
±¹¼ÒÁ¦¾îÀ²ÀÌ
°¢°¢
91.7%, 91.6% (p=0.8867)¿´´Ù. A±º¿¡¼­´Â 22¸í(18.0%)¿¡¼­ ÇÕº´ÁõÀÌ ¹ß»ýÇÏ¿´°í B±º¿¡¼­´Â 30¸í(29.4%)¿¡¼­ ÇÕº´ÁõÀÌ ¹ß»ýÇÏ¿´´Ù. ¹æ±¤¿¡ ´ëÇÑ ÇÕº´ÁõÀº A±º¿¡¼­ 12¸í(9.8%)ÀÌ ¹ß»ýÇÏ¿´°í grade 3ÀÌ»óÀÌ 2¸íÀ̾ú´Ù. B±º¿¡¼­´Â 15¸í(14.7%)¿¡¼­ ÇÕº´ÁõÀÌ
¹ß»ýÇÏ¿´À¸¸ç
grade
3ÀÌ»óÀÌ 3¸íÀ̾ú´Ù. Á÷Àå¿¡ ´ëÇÑ ÇÕº´ÁõÀº A±º¿¡¼­ 12¸í(9.8%)¿¡¼­ ¹ß»ýÇÏ¿´°í grade 3 ÀÌ»óÀÌ 1¸íÀ̾ú°í B±º¿¡¼­´Â 22¸í(21.6%)¿¡¼­ ¹ß»ýÇÏ¿´°í grade 3 ÀÌ»óÀÌ 10¸íÀ̾ú´Ù. ÇÕº´Áõ¿¡ ´ëÇÑ ´ÜÀϺ¯·®ºÐ¼®¿¡¼­ °í¼±·®·ü ±ÙÁ¢Ä¡·áÀÇ ºÐÇÒ ¼±·®ÀÌ ÀÛÀ¸¸é Àüü
ÇÕº´Áõ(p=
0.0405), Á÷ÀåÀÇ ÇÕº´Áõ(p=0.0147), ¹æ±¤ÀÇ ÇÕº´Áõ(p=0.115)ÀÌ °¨¼ÒÇÏ¿´°í ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á±º(p=0.0860) ¹× ±ÙÄ¡Àû ¹æ»ç¼±Ä¡·á±º(p=0.0370)¿¡¼­µµ ºÐÇÒ¼±·®ÀÌ ÀÛÀ¸¸é ÇÕº´ÁõÀº °¨¼ÒÇÏ¿´´Ù.

°á·Ð: ±ÙÄ¡Àû ¹æ»ç¼±Ä¡·á ½Ã °í¼±·®·ü ±ÙÁ¢Ä¡·áÀÇ ÀûÀýÇÑ ºÐÇÒ¼±·®¿¡ ´ëÇÑ Æò°¡´Â ȯÀÚÀÇ º´±â, ¿¹ÈÄÀÎÀÚ µîÀ» °í·ÁÇÑ ´Ù¾çÇÑ ºÐÇÒ¼±·®¿¡ ´ëÇÑ ¼¼ºÐÈ­ÇÑ ¿¬±¸°¡ ´õ ÇÊ¿äÇÒ °ÍÀÌ´Ù. ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á ½Ã °í¼±·®·ü ±ÙÁ¢Ä¡·áÀÇ ºÐÇÒ¼±·®Àº ±¹¼ÒÁ¦¾î¿¡ ¿µÇâÀ»
¹ÌÄ¡Áö
¾Ê¾Ò°í ÇÕº´Áõ¿¡ ´ëÇؼ± ºÐÇÒ¼±·®ÀÌ Ä¿Áö¸é ´Ù¼Ò Áõ°¡ÇÏ´Â ¸éÀ» º¸¿© ºÐÇÒ¼±·®À» 3 §í·Î ÁÖ 3ȸ ½ÃÇàÇÏ´Â °ÍÀÌ ÇϳªÀÇ Ä¡·á ¹æ¹ýÀÌ µÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.

Purpose: Although high-dose-rate (HDR) brachytherapy regimens have been practiced with a variety of modalities and various degrees of success, few studies on the subject have been conducted. The purpose of this study was to compare the
results of
local control and late complication rate according to different HDR brachytherapy fractionation regimens in uterine cervical cancer patients.

Methods and Materials: From November 1992 to March 1998, 224 patients with uterine cervical cancer were treated with external beam irradiation and HDR brachytherapy. In external pelvic radiation therapy, the radiation dose was 45¡­54 §í
(median
dose 54 §í) with daily fraction size 1.8 §í, five times per week. In HDR brachytherapy, 122 patients (Group A) were treated with three times weekly with 3 §í to line-A (isodose line of 2 §¯ radius from source) and 102 patients (Group B) underwent
the
HDR brachytherapy twice weekly with 4 or 4.5 §í to line-A after external beam irradiation. Iridium-192 was used as the source of HDR brachytherapy. Late complication was assessed from grade 1 to 5 using the RTOG morbidity grading system.

Results: The local control rate (LCR) at 5 years was 80% in group A and 84% in group B (p=0.4523). In the patients treated with radiation therapy alone, LCR at 5 years was 60.9% in group A and 76.9% in group B (p=0.2557). In post-operative
radiation therapy patients, LCR at 5 years was 92.6% in group A and 91.6% in group B (p=0.8867). The incidence of late complication was 18% (22 patients) and 29.4% (30 patients), of bladder complication was 9.8% (12 patients) and 14.7% (15
patients),
and of rectal complication was 9.8% (12 patients) and 21.6% (22 patients), in group A and B, respectively. Lower fraction sized HDR brachytherapy was associated with decrease in late complication (p=0.0405) (rectal complication, p=0.0147; bladder
complication, p=0.115). The same result was observed in postoperative radiation therapy patients (p=0.0860) and radiation only treated patients (p=0.0370).

Conclusion: For radiation only treated patients, a greater number of itemized studies on the proper fraction size of HDR brachytherapy, with consideration for stages and prognostic factors, are required. In postoperative radiation therapy,
the
fraction size of HDR brachytherapy did not have much effect on local control, yet the incidence of late complication increased with the elevation in fraction size. We suggest that HDR brachytherapy three times weekly with 3 §í could be an
alternative
method of therapy.

Å°¿öµå

ÀڱðæºÎ¾Ï; °í¼±·®·ü ±ÙÁ¢Ä¡·á; ºÐÇÒ¼±·®; Uterine cervical cancer; High-dose-rate brachytherapy; Fraction size;

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