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ºñÀΰ­¾ÏÀÇ ¹æ»ç¼±Ä¡·á ¼ºÀû Radiotherapy for Nasopharyngeal Carcinoma

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Abstract

¸ñ Àû: ºñÀΰ­¾Ï ȯÀÚ¿¡¼­ ¹æ»ç¼±Ä¡·á ÈÄ Àç¹ß ¾ç»ó, »ýÁ¸À² ¹× »ýÁ¸À²¿¡ ¹ÌÄ¡´Â ¿¹ÈÄÀÎÀÚ¸¦ ºÐ¼®Æò°¡Çϱâ À§ÇØ ÈÄÇâÀûÀ¸·Î ºÐ¼®À» ÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý: 1984³â 1¿ùºÎÅÍ 2000³â 6¿ù±îÁö ÇѾç´ëÇк´¿ø Ä¡·á¹æ»ç¼±°ú¿¡¼­ ¹æ»ç¼±Ä¡·á¸¦ À§ÇØ ÀÇ·ÚµÈ ºñÀΰ­¾Ï 49¸íÀ» ´ë»óÀ¸·Î ÈÄÇâÀû ºÐ¼®À» ÇÏ¿´´Ù. ÃßÀû±â°£Àº Æò±Õ 76°³¿ùÀ̾ú°í ÃÖ¼Ò 2³â 6°³¿ùÀ̾ú´Ù. ¿¬·ÉºÐÆ÷´Â 17¼¼ºÎÅÍ 78¼¼¿´°í Áß¾Ó¿¬·ÉÀº 52¼¼¿´´Ù. Á¶Á÷º´¸®»ó ÆíÆò»óÇǼ¼Æ÷¾ÏÀÌ 21¿¹, ¹ÌºÐÈ­¾ÏÀÌ 25¿¹, »ù¸ð¾ç ³¶¾ÏÁ¾ÀÌ 3¿¹¿´´Ù. ¹Ì±¹¾ÏÇÕµ¿À§¿øȸÀÇ 1997³â °³Á¤ÆÇÀ¸·Î ÀçºÐ·ùÇÑ º´±â·Î T1 14¿¹, T2 24¿¹, T3 3¿¹, T4 8¿¹¿´´Ù. N0 17¿¹, N1 15¿¹, N2 4¿¹, N3 13¿¹¿´´Ù. º´±â±ºº°Àº stage I, IIa, IIb, III, IVa IVb°¡ °¢°¢ 4¿¹, 7¿¹, 12¿¹, 5¿¹, 8¿¹, 13¿¹¿´´Ù. ¹æ»ç¼±Àº ¿ø¹ßº´¼Ò³ª ÀÓÆļ±ÀüÀ̺ÎÀ§¿¡ 58¢¦70 Gy¸¦ Á¶»ç ½ÃÇàÇÏ¿´´Ù.

°á °ú: 5³â »ýÁ¸À² ¹× 10³â »ýÁ¸À²Àº °¢°¢ 54.5% ¹× 47%¿´´Ù. 5³â ¹«º´ »ýÁ¸À² ¹× 10³â ¹«º´»ýÁ¸À²Àº °¡°¢ 55.7% ¹× 45.3%¿´´Ù. º´±âº°·Î 100%, IIa 80%, IIb 59.5%, III 40%, IV 42.2%ÀÇ 5³â »ýÁ¸À²À» º¸¿´´Ù. ÃÑ 23¿¹ÀÇ Àç¹ßÀ» º¸¿´°í 10¿¹(20.4%)¿¡¼­ ±¹¼Ò Àç¹ß, 4¿¹(8.2%)¿¡¼­ ÀÓÆļ±Àç¹ß, 10¿¹(20.4%)¿¡¼­ ¿ø°ÝÀüÀÌ°¡ ÀÖ¾ú´Ù. º´±â¿¡ µû¸¥ ±¹¼ÒÀç¹ß·üÀº T1 2¿¹(4.3%), T2 3¿¹(12.5%), T4 5¿¹(62.6%)·Î Tº´±â°¡ ³ôÀ»¼ö·Ï Àç¹ß·üÀÌ ³ô¾Ò´Ù. ¿ø°ÝÀüÀÌ´Â N2-3ȯÀÚ¿¡¼­ ¸¹¾Ò´Ù(41.2%). ±¹¼Ò Àç¹ß½Ã±â´Â 50%°¡ 2³â À̳»¿´°í ¿ø°Ý ÀüÀ̽ñâ´Â 70%¿¡¼­ 2³â À̳»¿´´Ù. ¿¹Èķδ ¿©¼º, ÀþÀº ¿¬·É, Á¶±â Tº´±â ¹× Á¶±â ÀüüÀûÀÎ º´±â ¹× ¹ÌºÐÈ­¼¼Æ÷°¡ »ýÁ¸À²ÀÌ ³ô¾ÒÀ¸¸ç ±×Áß Á¶±â Tº´±â ¹× ÀüüÀûÀÎ º´±â°¡ Åë°èÀûÀÎ À¯ÀǼºÀÌ ÀÖ¾ú´Ù.

°á ·Ð: ºñÀΰ­¾ÏÀÇ ¹æ»ç¼±Ä¡·á°á°ú´Â ±¹¼Ò Àç¹ß·üÀº T4 º´±â¿¡ ³ô°í ¿ø°ÝÀüÀÌ´Â 2¢¦3º´±â¿¡ ÇöÀúÈ÷ ³ôÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ±¹¼ÒÀç¹ßÀ» ³·Ãß±â À§ÇØ Æ¯È÷ T4¿¡¼­ Á»´õ ¸¹Àº ¾çÀÇ ¹æ»ç¼±ÀÌ ¿ä±¸µÇ¸ç ¹æ»ç¼±·®À» ³ôÀ̱â À§ÇØ »ïÂ÷¿øÀûÀÎ Ä¡·á°èȹÀ» ÀÌ¿ëÇÑ ÀÔüÁ¶Çü ¹æ»ç¼± Ä¡·á³ª ¼¼±âÁ¶Àý ¹æ»ç¼± Ä¡·á µîÀÌ ÇÊ¿äÇϸ®¶ó »ý°¢µÇ¸ç ÀÓÆļ±ÀüÀÌȯÀÚ¿¡¼­ º¸´Ù È¿°úÀûÀÎ Ç×¾ÏÁ¦¿Í ¹æ»ç¼±ÀÇ º´¿ë¿ä¹ýÀÇ °³¹ßÀÌ ÇÊ¿äÇϸ®¶ó »ý°¢µÈ´Ù.

Purpose: To evaluate the results of radiation management on recurrence, survival and prognostic factors of patients with nasopharyngeal cancer.

Materials and Methods: Forty-nine patients, treated for nasopharyngeal cancer by radiotherapy between January 1984 and June 2000, were retrospectively studied. All patients were followed up for at least 2.5 years. Their median age was 52 years (range 17¢¦78). The histological types were 21 squamous cell carcinoma, 25 undifferentiated carcinoma, and 3 adenoid cystic carcinoma. The tumor stages were as follows: T1 in 14 patients, T2 in 24, T3 in 3, and T4 in 8, and N0 in 17 patients, N1 in 15, N2 in 4 and N3 in 13. Stages I, IIa, IIb ,III, IV and IVb were 4, 7, 12, 5, 8, and 13 patients respectively. Radiation doses of 58¢¦70 Gy (median 68.7 Gy) were given to the nasopahryngeal and involved lymphatic areas and of 46¢¦50 Gy to the uninvolved neck areas.

Results: The overall 5 and 10-year actuarial and disease free survival rates were 54.53% and 47%, and 55.7% and 45.3%, respectively. The overall five-year survival rates were 100% in stage I , 80% in stage IIa, 59.5% in stage IIIb, 40% in stage III, and 42.2% in stage IV tumors. Twenty-three patients failed either loco-regionally or distantly. Incidences of local failure, regional failure and distant metastasis for the first failure were 20.4%, 8.2% and 20.4%, respectively. Local recurrences were 4.3% in T1, 12.5% in T2, 0% in T3, and 62.5% in T4 lesions. Distant metastasis was seen in 41.2% of N2-3 lesions. Fifty percent of local recurrence appeared within 2 years of treatment at the primary lesion, whereas 70% of distant metastasis appeared within 2 years following treatment. Young age, female, early T stage, N0 stage, and poorly differentiated carcinoma were all related with good survival. However only stage showed statistically significance.

Conclusion: Based on the results of this study, radiation therapy to nasopharyngeal cancer showed high local recurrence in T4 and increased metastasis in N2-3 lesions. To improve local failure, further radiation doses, such as stereotactic radiation or IMRT radiation, are necessary especially in T4 lesions. The high incidence of distant metastasis in positive lymph node patients, indicates that combined radiation and effective chemotherapeutic agents with appropriated schedule are necessary.

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Nasopharyngeal cancer; Radiation;ºñÀΰ­¾Ï; ¹æ»ç¼±Ä¡·á; ½ÇÆоç»ó

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