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³ú³» Èñµ¹±â±³Á¾ÀÇ ¹æ»ç¼±Ä¡·á ¼ºÀû ¹× ¿¹ÈÄÀÎÀÚ The Efficiency of Radiation Therapy in the Treatment of Intracranial Oligodendrogliomas : Factors Influencing the Prognosis

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À±¼¼Ã¶/Sei Chul Yoon °èö½Â/Á¤¼ö¹Ì/À¯¹Ì·É/±è¿¬½Ç/È«¿ë±æ/±è¹®Âù/°­Áرâ/Chul Seung Kay/Su Mi Chung/Mi Ryung Ryu/Yeon Shil Kim/Yong Kil Hong/Moon Chan Kim/Joon Ki Kang

Abstract

¸ñÀû: Èñµ¹±â±³Á¾Àº õõÈ÷ ÀÚ¶ó´Â ³·Àº ºóµµÀÇ ³ú Á¾¾çÀ¸·Î¼­ ¼ö¼ú·Î Ä¡À¯µÇÁö¸¸ ¿ÏÀüÀýÁ¦°¡ ¾î·Á¿ö ¼ö¼úÈÄ ¹æ»ç¼±Ä¡·á°¡ ÃßõµÇ°í ÀÖ´Ù. Èñµ¹±â±³Á¾ ȯÀÚÀÇ ¹æ»ç¼±Ä¡·áÈÄ »ýÁ¸À²°ú ÀÌ »ýÁ¸À²¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ¿¹ÈÄ ÀÎÀÚµéÀ» ¾Ë¾Æº¸±â À§ÇØ ÀÌ ¿¬±¸¸¦
ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: 1983³â 3¿ù ºÎÅÍ 1997³â 12¿ù ±îÁö 177°³¿ù µ¿¾È¿¡ °¡Å縯´ëÇб³ °­³²¼º¸ðº´¿ø Ä¡·á¹æ»ç¼±°ú¿¡¼­´Â Á¶Á÷ÇÐÀû Áø´ÜÀÌ È®ÁøµÈ ÃÑ 42¿¹(³² : ¿© = 25 : 17)ÀÇ Èñµ¹±â±³Á¾ ȯÀÚ¿¡ ´ëÇÑ ¹æ»ç¼±Ä¡·á¸¦ ½Ç½ÃÇÏ¿´´Ù. ¹æ»ç¼±Ä¡·á´Â 6 §Æ ¼±Çü°¡¼Ó±â¸¦
ÀÌ¿ëÇÏ¿©
180 c§í/ÀÏ, ÁÖ 5ȸ ¾¿, ÃÑ Á¶»ç¼±·® 39.6¡­75.6 §í (Áß¾Ó°ª 54 §í)¸¦ ½Ç½ÃÇÏ¿´´Ù. ȯÀÚÀÇ ³ªÀÌ´Â 5¡­62¼¼(Áß¾Ó°ª 39¼¼)¿¡ ºÐÆ÷ÇÏ¿´À¸¸ç ÃßÀûÁ¶»ç ±â°£Àº 8¡­152°³¿ù(Æò±Õ 63.4°³¿ù)À̾ú´Ù. ¹æ»ç¼±Ä¡·á Á¾·áÀÏÀ» ±âÁØÀ¸·Î »ýÁ¸À²(Kaplan-Meier ¹ý)°ú ÀÌ »ýÁ¸À²¿¡
¿µÇâÀ»
¹ÌÄ¡´Â ÀÎÀÚµéÀ» ÈÄÇâÀûÀ¸·Î ºÐ¼®ÇÏ¿´´Ù.

°á°ú: ¹æ»ç¼±Ä¡·áÈÄ 5³â »ýÁ¸À²(5YSR)Àº 65.3% À̾ú´Ù(Áß¾Ó°ª 90°³¿ù). Á¾¾çÀÇ ¼ö¼úÀû Á¦°Å¸¦ ½Ç½ÃÇÑ °æ¿ì°¡ Á¶Á÷ »ý°Ë ¸¸À» ÇÑ °æ¿ì º¸´Ù »ýÁ¸À²ÀÌ ÁÁ¾ÒÀ¸¸ç(5YSR; 69.9% vs 26.7%; p<0.01), ¼ö¼úÈÄ ¹æ»ç¼±Ä¡·á¸¦ 4ÁÖ À̳»¿¡ ½Ç½ÃÇÑ ±ºÀÌ 4ÁÖ ÀÌÈÄÀÇ
°æ¿ìº¸´Ù
»ýÁ¸À²ÀÌ ÁÁÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù(5YSR; 86% vs 49%; p<0.03). Á¾¾ç¿¡ ´ëÇÑ ¹æ»ç¼± ÃÑ Á¶»ç¼±·®ÀÌ 60 §í ÀÌ»óÀÎ ±º¿¡¼­´Â 60 §í ÀÌÇÏ Ä¡·áÇÑ ±º¿¡ ºñÇÏ¿© »ýÁ¸À²ÀÇ Áõ°¡¸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(5YSR; 74.9% vs 33.3%; p<0.02). Á¶Á÷ÇÐÀû ¾Ç¼º ºÐÈ­µµ°¡ ³ôÀ»¼ö·Ï »ýÁ¸À²Àº
³·¾ÒÀ¸¸ç(p<0.01). Á¾¾çÀÇ Å©±â, ³ú³» Á¾¾çÀÇ À§Ä¡, Àü³ú ¹æ»ç¼±Á¶»çÀÇ À¯¹«, ¹æ»ç¼±Ä¡·á¿¡ ¼Ò¿äµÈ ÃÑ ±â°£, ¼ºº°, ³ªÀÌ, È­Çпä¹ý Ä¡·á À¯¹« µî¿¡ µû¸¥ »ýÁ¸À² º¯È­ÀÇ Â÷ÀÌ´Â ¾ø´Â °ÍÀ¸·Î ºÐ¼®µÇ¾ú´Ù(p>0.05).

°á·Ð: Èñµ¹±â±³Á¾ ȯÀÚÀÇ ¹æ»ç¼±Ä¡·á´Â ±¹¼ÒÀûÀ¸·Î º´¼ÒºÎÀ§¿¡ ¼ö¼úÈÄ 4ÁÖ À̳»¿¡ ½Ç½ÃÇÏ¿© »ýÁ¸À² Áõ°¡¸¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ÀüÅëÀûÀÎ ºÐÇÒ ¹æ»ç¼±Ä¡·á ½Ã ÃÑ ¹æ»ç¼±Á¶»ç¼±·®ÀÌ 60 §í ÀÌ»óÀº »ýÁ¸À²À» Áõ°¡½ÃÅ°Áö ¸øÇÏ¿´´Ù.

Purpose: Oligodendrogliomas (ODG) are a rare, slow growing, tumor in the brain, which can be cured by complete surgical resection, but as yet it is not known if postoperative adjuvant radiation therapy (RT) is essential. We analyzed the
treatment
results of patients with irradiated ODG to investigate the efficacy of RT in terms of survival rates and other influencing prognostic factors.

Methods and Materials: Between March 1983 and December 1997, 42 patients with ODG were treated with RT at our hospital. The RT was performed daily at a dose of 1.8¡­2.0 §í, at 5 fractions per week, to a total dose of between 39.6 §í and
64.8
§í
(mean 53.3 §í). The ages of the patients ranged between 5 and 62 years, with a median age of 39 years. The mean follow-up period was 63.4 months (8-152 months). The Kaplan-Meier method was used to assess the survival, and 5 year survival rates
(5-YSR).
Log rank tests and Cox regression analyses were used to define the significance of prognostic factors.

Results: The majority of ODG in this study were located in the cerebral hemisphere (83.3%). ODG are slightly more common in men than women, and commonly occurs in middle age, between the 3rd and 4th decades. It has been recommended that RT
is
commenced within 4 weeks following surgery (5-YSR; 86% vs. 49%; p<0.03). Histologically well differentiated, as opposed to poorly differentiated, tumors were found to have a more favorable prognosis (p<0.02). The actuarial 5-YSR was 65.3% (median
survival 90 months). 5-YSR for the various extents of surgical excision, followed by external RT, was superior to that of biopsy only followed by external RT (69.9% vs. 26.6%, p<0.01). Tumor size and location, overall elapsed irradiation days,
age,
sex,
whole brain irradiation as a course of treatment and chemotherapy, had no influence on the 5-YSR (p>0.05).

Conclusion: A local involved field irradiation with conventional fractionation, commencing within 4 weeks following surgical excision of the tumor, was beneficial for the 5-YSR, but a total radiation dose exceeding 60 Gy did not improve
the
5-YSR.

Å°¿öµå

Èñµ¹±â±³Á¾; ¹æ»ç¼±Ä¡·á; ¿¹ÈÄÀÎÀÚ; Oligodendroglioma; Radiation therapy; Prognostic factor;

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