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Abstract

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°á °ú: ÀÔ·ÂµÈ È¯ÀÚµéÀÇ ¼ºº° ºÐÆ÷´Â ³²ÀÚ 224¸í(91.1%), ¿©ÀÚ 22¸í(8.9%)À̾ú°í ¿¬·Éº° Áß¾Ó°ªÀº 62¼¼ ÀüÈÄ¿´´Ù. Áø´Ü ¹× º´±â°áÁ¤À» À§ÇÑ °Ë»ç·Î´Â ½Äµµ ÃÔ¿µ¼ú(228¸í, 92.7%), ½Äµµ³»½Ã°æ(226¸í, 91.9%) ¹× ÈäºÎ ½Äµµ CT ½ºÄµ(238¸í, 96.7%)À» ÁÖ·Î ½ÃÇàÇÏ¿´´Ù. ÆíÆò»óÇǾÏÀÌ ´ëÁ¾À» ÀÌ·ç¾î 237¸í(96.3%)ÀÇ È¯ÀÚ¿¡¼­ °üÂûµÇ¾ú°í ÁßÈäºÎ½Äµµ(mid-thoracic esophagus)¿¡¼­ ¹ß»ýÇÑ ½Äµµ¾ÏÀÌ °¡Àå ¸¹¾Ò´Ù(110¸í, 44.7%). ÀÓ»ó º´±â´Â III±â°¡ °ú¹Ý¼ö ÀÌ»óÀ» Â÷ÁöÇÏ¿´´Ù(135¸í, 54.9%). ¹æ»ç¼± Ä¡·á¸¸ ¹ÞÀº °æ¿ì´Â 57¸í(23.2%), ¹æ»ç¼± Ä¡·á¿Í ¼ö¼úÀ» º´¿ëÇÑ °æ¿ì´Â ÀüüÀÇ 15%ÀÎ 37¸í, Ç׾Ͼ๰ Ä¡·á¿Í ¹æ»ç¼± Ä¡·á¸¦ º´¿ëÇÑ °æ¿ì´Â 123¸í(50%)À̾ú´Ù. ¼ö¼ú°ú ¹æ»ç¼± Ä¡·á¸¦ º´ÇàÇÑ °æ¿ì Àü·Ê¿¡¼­ ¼ö¼úÀ» ¸ÕÀú ½ÃÇàÇÑ ÈÄ ¹æ»ç¼± Ä¡·á¸¦ ÇÏ¿´´Ù. Ç×¾ÏÄ¡·á¸¦ ¹æ»ç¼±Ä¡·á¿Í º´ÇàÇÑ °æ¿ì ¹Ý¼ö À̻󿡼­(70¸í, 56.9%) µ¿½ÃÇ׾Ϲæ»ç¼± Ä¡·á¸¦ ½ÃÇàÇÏ¿´°í 31¸í(25.2%)¿¡¼­ Ç×¾ÏÄ¡·á ÈÄ ¹æ»ç¼±Ä¡·á¸¦ ¶Ç´Â Ç׾Ͽä¹ý ´Üµ¶Ä¡·á ÈÄ µ¿½ÃÇ׾Ϲæ»ç¼±Ä¡·á¸¦(13¸í, 10.6%) ½ÃÇàÇÏ¿´´Ù. ¹æ»ç¼± Ä¡·á´Â 6 MV (116¸í, 47.2%)¿Í 10 MV (87¸í, 35.4%)ÀÇ X-ray°¡ ´ëÁ¾À» ÀÌ·ç¾ú´Ù. ¹æ»ç¼± Ä¡·á ½Ã Á¶»ç¾ß´Â longitudinal marginÀÇ °æ¿ì Áß¾Ó°ªÀº 7.0 cmÀ̾úÁö¸¸ °¢ ±ºº°·Î ÇöÀúÇÑ Â÷ÀÌ°¡ ÀÖ¾ú´Ù(A±º; 5.5 cm, B±º; 8.0 cm, C±º; 14.0 cm). °èȹ¿ë CT¸¦ »ç¿ëÇÏÁö ¾Ê°í °í½ÄÀûÀÎ AP/PA Á¶»ç¾ß¸¦ »ç¿ëÇÏ¿© Ä¡·áÇÑ °æ¿ì°¡ ´ëºÎºÐÀ̾ú´Âµ¥(206¸í, 83.7%) ÀÌ ¶§ ¹æ»ç¼± Á¶»ç·®ÀÇ Áß¾Ó°ªÀº 3,600 cGyÀ̾ú´Ù. ÀÌÈÄ Ãß°¡ ¹æ»ç¼± Ä¡·á ½Ã °èȹ¿ë CT¸¦ »ç¿ëÇÏÁö ¾Ê°í 2-oblique fields »ç¿ëÇÏ¿© Ä¡·áÇÑ °æ¿ì°¡ 87¸í(35.4%)À̾ú´Âµ¥ ¹æ»ç¼± Á¶»ç·®ÀÇ Áß¾Ó°ªÀº 1,800 cGyÀ̾ú´Ù. Àü ȯÀÚ¿¡¼­ 1ÀÏ 1ȸ 180 cGy·Î Ä¡·áÇÏ¿´´Ù. Àü ȯÀÚ¿¡¼­ Á¶»çµÈ ÃÑ ¹æ»ç¼±·®ÀÇ Áß¾Ó°ªÀº 5,580 cGyÀ̾ú´Ù. ¼ö¼ú ÈÄ ¹æ»ç¼± Ä¡·á¸¦ ½ÃÇàÇÑ °æ¿ì Áß¾Ó°ªÀº
5,040 cGyÀ̾ú°í ¼ö¼úÀ» ¹ÞÁö ¾ÊÀº ȯÀÚ Áß¾Ó°ªÀº 5,940 cGyÀ̾ú´Ù. ±ÙÁ¢Á¶»ç ¹æ»ç¼± Ä¡·á´Â ÃÑ 34¸í(13.8%)¿¡¼­ ½ÃÇàµÇ¾ú°í, Àü ȯÀÚ¿¡¼­ high dose rate Iridium-192¸¦ »ç¿ëÇÏ¿´´Ù. Á¶»ç¹üÀ§´Â Á¾¾ç¿¡¼­ longitudinal marginÀÇ Áß¾Ó°ªÀº 1 cm, prescribed isodose curve¿¡¼­ axial lengthÀÇ Æò±Õ°ªÀº 8.25 cm, ÆøÀº 2 cm, ±×¸®°í ÀüÈÄ ÆøÀÇ Áß¾Ó°ªµµ 2 cmÀ̾ú´Ù. Fraction sizeÀÇ Áß¾Ó°ªÀº 300 cGyÀ̾ú´Âµ¥ B±ºÀÇ °æ¿ì´Â 500 cGyÀ̾ú´Ù. ÃÑ ºÐÇÒ È½¼ö´Â 3¡­4ȸ°¡ ´ëºÎºÐÀ̾ú´Ù. ÇÑÆí, ¹æ»ç¼± Ä¡·á Áß ¹ß»ýÇÑ ±Þ¼º ºÎÀÛ¿ëÀº ½Äµµ¿°ÀÌ °¡Àå ¸¹¾Ò´Âµ¥ Àüü 246¸í ȯÀÚ Áß 155¸í(63.0%)¿¡¼­ ¹ß»ýÇÏ¿´´Ù.

°á ·Ð: Àü±¹ 23°³ º´¿øÀÇ ½Äµµ¾Ï ȯÀÚ Ä¡·á Data¸¦ ºÐ¼®ÇØ º» °á°ú ´ëºÎºÐÀÇ º´¿ø¿¡¼­ ȯÀÚÀÇ Æ¯Â¡°ú Áø´Ü ¹× º´±â°áÁ¤ ¹æ¹ý, Ä¡·áÀÇ À¯Çü µî¿¡¼­ À¯»çÇÑ °á°ú¸¦ º¸¿´À¸¸ç ½Åȯ ¹ß»ý ¼ö¿¡ µû¸¥ º´¿ø ±Ô¸ðÀÇ Â÷ÀÌ´Â Á¶»ç °á°ú¿¡ Å« ¿µÇâÀ» ¹ÌÄ¡Áö ¸øÇÏ¿´´Ù. ÇÏÁö¸¸ º´¿ø ±Ô¸ð°¡ Ŭ¼ö·Ï 10 MV ÀÌ»óÀÇ °í¿¡³ÊÁö·Î Ä¡·áÇÏ´Â °æÇâÀÌ ¸¹¾ÒÀ¸¸ç 3D CT Planµµ º´¿ø ±Ô¸ð°¡ Ŭ¼ö·Ï È°¿ëµµ°¡ ³ô¾Ò´Ù. Á¶»ç ¾ßÀÇ ¸éÀûµµ º´¿ø ±ºº°·Î Â÷À̸¦ º¸¿´´Ù. ÇâÈÄ ´õ ¸¹Àº ȯÀÚ¸¦ ÀÔ·ÂÇÏ¿© »ýÁ¸À² ºÐ¼®±îÁö ÀÌ·ç¾îÁö¸é ÀÌ ¿¬±¸´Â ½Äµµ¾Ï Ä¡·á¹æħÀÇ °áÁ¤¿¡ Áß¿äÇÑ guidelineÀ» Á¦½ÃÇØ ÁÙ °ÍÀ¸·Î »ç·áµÈ´Ù.

Purpose: For the first time, a nationwide survey in the Republic of Korea was conducted to determine the basic parameters for the treatment of esophageal cancer and to offer a solid cooperative system for the Korean Pattern of Care Study database.
Materials and Methods: During 1998¡­1999, biopsy-confirmed 246 esophageal cancer patients that received radiotherapy were enrolled from 23 different institutions in South Korea. Random sampling was based on power allocation method. Patient parameters and specific information regarding tumor characteristics and treatment methods were collected and registered through the web based PCS system. The data was analyzed by the use of the Chi-squared test.
Results: The median age of the collected patients was 62 years. The male to female ratio was about 91 to 9 with an absolute male predominance. The performance status ranged from ECOG 0 to 1 in 82.5% of the patients. Diagnostic procedures included an esophagogram (228 patients, 92.7%), endoscopy (226 patients, 91.9%), and a chest CT scan (238 patients, 96.7%). Squamous cell carcinoma was diagnosed in 96.3% of the patients; mid-thoracic esophageal cancer was most prevalent (110 patients, 44.7%) and 135 patients presented with clinical stage III disease. Fifty seven patients received radiotherapy alone and 37 patients received surgery with adjuvant postoperative radiotherapy. Half of the patients (123 patients) received chemotherapy together with RT and 70 patients (56.9%) received it as concurrent chemoradiotherapy. The most frequently used chemotherapeutic agent was a combination of cisplatin and 5-FU. Most patients received radiotherapy either with 6 MV (116 patients, 47.2%) or with 10 MV photons (87 patients, 35.4%). Radiotherapy was delivered through a conventional AP-PA field for 206 patients (83.7%) without using a CT plan and the median delivered dose was 3,600 cGy. The median total dose of postoperative radiotherapy was 5,040 cGy while for the non-operative patients the median total dose was 5,970 cGy. Thirty-four patients received intraluminal brachytherapy with high dose rate Iridium-192. Brachytherapy was delivered with a median dose of 300 cGy in each fraction and was typically delivered 3¡­4 times. The most frequently encountered complication during the radiotherapy treatment was esophagitis in 155 patients (63.0%).
Conclusion: For the evaluation and treatment of esophageal cancer patients at radiation facilities in Korea, this study will provide guidelines and benchmark data for the solid cooperative systems of the Korean PCS. Although some differences were noted between institutions, there was no major difference in the treatment modalities and RT techniques.

Å°¿öµå

½Äµµ¾Ï; PCS; ¹æ»ç¼±Ä¡·á
Esophageal cancer; Patterns of care study; Radiotherapy

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