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Abstract

¸ñ Àû : ±¹¼ÒÀûÀ¸·Î ÁøÇàµÈ º´±â ¥²A, ¥²B ºñ¼Ò¼¼Æ÷ Æó¾Ï¿¡¼­ °úºÐÇÒ ¹æ»ç¼± Ä¡·áÀÇ È¿°ú
¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
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¼Ò¼¼Æ÷ Æó¾ÏÀ¸·Î È®ÁøµÈ ȯÀÚ Áß Àü½Å»óÅ°¡ ¾çÈ£ÇÑ (ECOG score 2 ÀÌÇÏ) 51¸íÀ» ´ë»óÀ¸·Î
ºÐ¼®ÇÏ¿´´Ù.
¹æ»ç¼±Ä¡·á´Â È®Áø ÈÄ 2ÁÖ³» ½ÃÇàÇÏ¿´À¸¸ç 15 MV x-ray¸¦ ÀÌ¿ëÇÏ¿© ÀÏÀÏ 2ȸ (¸Å Ä¡·á
´ç 120 cGy) ÁÖ 5ȸ Ä¡·áÇÏ¿´À¸¸ç ¹æ»ç¼± ÃÑ·®Àº 6400-7080 cGy (Áß¾Ó°ª 6934 cGy)°¡ µÇ
µµ·Ï Á¶»çÇÏ¿´´Ù.
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À¸³ª (ÆíÆò»ó ÇÇ¾Ï 74.5%, ¼±¾Ï 71.4%), ¿ø°ÝÀüÀÌ´Â ¼±¾ÏÀÌ ¸¹¾Ò´Ù (ÆíÆò»óÇÇ¾Ï 29.8%, ¼±¾Ï
50.0%). °úºÐÇÒ ¹æ»ç¼± Ä¡·á¿¡ ´ëÇÑ ÇÕº´ÁõÀº Àüü 61¸í ȯÀÚ Áß 43¸í¿¡¼­ Grade ¥°-¥±ÀÇ
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³ªÅ¸³µ°í, ¸¸¼º ¹æ»ç¼± Æó·ÅÀº 1¸í¿¡¼­ ³ªÅ¸³µÀ¸¸ç 13°³¿ù¸¸¿¡ ¸¸¼º ¹æ»ç¼± Æó·Å¿¡¼­ Æó ¼¶
À¯È­°¡ ÁøÇàµÇ¾î »ç¸ÁÇÏ¿´´Ù.
°á ·Ð : ±¹¼ÒÀûÀ¸·Î ÁøÇàµÇ¾î ¼ö¼ú ºÒ°¡´ÉÇÑ ºñ¼Ò¼¼Æ÷¼º Æó¾ÏÁß Æ¯È÷ ¥²AÀÇ °æ¿ì Ä¡·á¿¡
´ëÇÑ µ¶¼ºÀ» °¨¾ÈÇÏ´õ¶óµµ °úºÐÇÒ ¹æ»ç¼± Ä¡·á¸¦ ½ÃµµÇÏ¿© ¿ÏÀü °üÇØÀ²À» Çâ»ó½ÃÅ´À¸·Î½á
»ýÁ¸À² Çâ»ó¿¡ ¸¹Àº µµ¿òÀ» ÁÙ ¼ö ÀÖÀ» °ÍÀ¸·Î »ç·áµÈ´Ù.

Purpose : The effect of hyperfractionated radiotherapy on locally advanced non-small
lung cancer was studied by a retrospective analysis.
Materials £¦ Methods : We analyzed sixty one patients of biopsy-confirmed, ¥²A and
¥²B non-small cell lung cancer. Using the ECOG performance scale, all the patients
were scored less than 2. They were treated by curative hyperfractionated radiotherapy
alone from Oct, 1992 to Oct. 1995 at the Department of Radiation Oncology. All the
patients received 120cGy b.i.d with more than 6 hours interval between each fraction
The total dose of radiation was reached up to 6400-7080 cGy with a mean dose of 6934
cGy.
The results were analyzed retrospectively.
Results :The overall survival rate was 53.1% in 1 years, 9.9% in 2 year with a
median survival time (MST) of 13.9 months. The progression free survival (PFS) rate
was 37.0% in 1 years, 8.9% in 2 years. Twenty two patients were classified as complete
responders to this treatment and their MST was 19.5 months. When this was compared
with that of partial responders (MST: 11.7months), it was statistically significant
(p=0.0003). Twenty nine patients of stage ¥²A showed a better overall survival rate(1yr
63.3%, 2yr 16.8%) than ¥²B patients (1yr 43.3%, 2yr 3.6%) which was also statistically
significant (p=0.003). Patients with adenocarcinoma showed a better survival rate (1yr
64.3%, 2yr 21.4%) than that of squamous cell counterpart (1yr 49.4%, 2yr 7.4%),
although this was not significant statistically (p=0.61). Two patients developed fatal
radiation-induced pneumonia right after the completion of the treatment which
progressed rapidly and they all died within 2 months. One patient developed
radiation-induced fibrosis after 13 months. He refused further treatment and died soon
after the development of fibrosis.
Conclusion : Among locally advanced NSCLC, hyperfractionated radiotherapy was
effective on stave ¥²A patients by increasing MST with acceptable toxicities. Acute
radiation-induced pneumonia should be carefully monitored and must be avoided during
or after this treatment.

Å°¿öµå

NSCLC; Hyperfractionated radiotherapy;

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