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Abstract

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´ë»ó ¹× ¹æ¹ý: 1990³âºÎÅÍ 2007³â±îÁö Ç×¹®¾ÏÀ¸·Î ±ÙÄ¡Àû Ç×¾ÏÈ­Çйæ»ç¼±Ä¡·á¸¦ ¸¶Ä£ ȯÀÚ 35¸íÀ» ´ë»óÀ¸·Î ¹æ»ç¼± Á¶»ç ¹æ¹ý ¹× °ü·ÃµÈ ÀÓ»óÀû ÀÚ·áµéÀ» ÀÌ¿ëÇÏ¿´´Ù. ¹æ»ç¼±Ä¡·á´Â ¿ø¹ßº´¼Ò, ¿µ¿ª¸²ÇÁÀý ¹× ¼­ÇýºÎ¸²ÇÁÀýÀÌ Ä¡·á¹üÀ§¿¡ Æ÷ÇÔµÈ »óÅ·Π1.8 Gy ¾¿ 41.4¡­45 Gy Á¶»ç ÈÄ ¿ø¹ß º´¼Ò ¶Ç´Â ÀüÀ̼º ¸²ÇÁÀý¿¡ Ãß°¡ Á¶»çÇÏ´Â °ÍÀ» ¿øÄ¢À¸·Î ÇÏ¿´´Ù. ¹æ»ç¼± Á¶»ç ±â¹ýÀº Á¶»ç ºÎÀ§ ¹× Á¶»ç ¼ö¿¡ µû¶ó 4°¡Áö·Î ºÐ·ùÇÏ¿´À¸¸ç °¢ ±â¹ý¿¡ µû¸¥ ȸÀ½ºÎ ±Þ¼ºÇǺιÝÀÀ ¹× Ä¡·áÁßÁö±â°£ °£ÀÇ °ü·Ã ¿©ºÎ¸¦ ¾Ë¾Æº¸¾Ò´Ù.

°á °ú: ¹æ»ç¼±Ä¡·á Áß 28¸í(80.0%)ÀÇ È¯ÀÚ¿¡¼­ 2µî±Þ ÀÌ»óÀÇ ¹æ»ç¼± ÇǺο°ÀÌ ¹ß»ýÇÏ¿´°í 10¸í(28.6%)ÀÌ 3µî±Þ ÀÌ»óÀÇ ¹æ»ç¼± ÇǺο°À» º¸¿´´Ù. 4°¡Áö ¹æ»ç¼± Á¶»ç ±â¹ý Áß ¿ø¹ßº´¼Ò¿Í ¿µ¿ª¸²ÇÁÀý¿¡ ´ëÇÑ 3¸é X-¼± ¹× ¾çÃø ¼­ÇýºÎ¸²ÇÁÀý¿¡ ´ëÇÑ ÀüÀÚ¼± Á¶»ç ±º°ú electron thunderbird ±º¿¡¼­ ¹æ»ç¼± ÇǺο°ÀÌ µ¿¹ÝµÈ ȯÀÚ ¼ö°¡ »ó´ëÀûÀ¸·Î Àû¾úÀ¸¸ç Ä¡·áÁßÁö±â°£ÀÌ °¢°¢ 8.2¡¾10.2ÀÏ, 5.7¡¾5.7ÀÏ·Î½á ´Ù¸¥ Ä¡·á ±â¹ýº¸´Ù Àû¾ú´Ù. ¹æ»ç¼±Ä¡·á Á¾·á ÈÄ 1°³¿ù ½ÃÁ¡¿¡¼­ 27¸í(77.1%)ÀÇ È¯ÀÚ¿¡¼­ ¿ÏÀü °üÇظ¦ º¸¿´À¸¸ç 5³â »ýÁ¸À²Àº 67.7%À̾ú´Ù.

°á ·Ð: Ç×¹®¾ÏÀÇ ¹æ»ç¼±Ä¡·á¿¡ ÀÖ¾î ¹æ»ç¼± Á¶»ç ¹æ¹ý ¹× ¹üÀ§°¡ Ä¡·á¼øÀÀµµ¿¡ ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖÀ¸¸ç, X-¼±ÀÇ È¸À½ºÎ Á¶»ç ¹üÀ§¸¦ ÁÙÀÌ´Â ¹æ¹ýÀÌ È¸À½ºÎÀÇ ½É°¢ÇÑ ¹æ»ç¼± ÇǺο°À» °¨¼Ò½ÃÅ´À¸·Î½á ȯÀÚÀÇ Ä¡·á¼øÀÀµµ¸¦ ³ôÀÌ´Â µ¥ ÀÖ¾î ÀûÀýÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.

Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Seoul, Korea

Purpose: Various treatment techniques have been attempted for the radiotherapy of anal cancer because of
acute side effects such as perineal skin reactions. This study was performed to investigate an optimal
radiotherapy technique in anal cancer.

Materials and Methods: The study subjects included 35 patients who underwent definitive concurrent chemoradiotherapy for anal cancer in Yonsei Cancer Center between 1990 and 2007. The patients¡¯ clinical data, including irradiation technique, were reviewed retrospectively. The primary lesion, regional lymph nodes, and both inguinal lymph nodes were irradiated by 41.4¡­45 Gy with a conventional schedule, followed by a boost does to the primary lesion or metastatic lymph nodes. The radiotherapy technique was classified into four categories according to the irradiation field and number of portals. In turn, acute skin reactions associated with the treatment interruption period were investigated according to each of the four techniques.

Results: 28 patients (80.0%) had grade 2 radiation dermatitis or greater, whereas 10 patients (28.6%) had grade 3 radiation dermatitis or greater during radiotherapy. Radiation dermatitis and the treatment interruption period were relatively lower in patients belonging to the posterior-right-left 3 x-ray field with inguinal electron boost and in patients belonging to electron thunderbird techniques. The interruption periods were 8.2¡¾10.2 and 5.7¡¾7.7 for the two technique groups, respectively. Twenty-seven patients (77.1%) went into complete remission at 1 month after radiotherapy and the overall 5 year survival rates were 67.7%.

Conclusion: Field size and beam arrangement can affect patients\\\¡¯ compliance in anal cancer radiotherapy,
whereas a small x-ray field for the perineum seems to be helpful by decreasing severe radiation dermatitis.

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Anal cancer;Radiotherapy;Skin reaction

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