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Diagnostic Accuracy of Computed Tomography and Magnetic Resonance Imaging Obtained after Neoadjuvant Chemoradiotherapy in Predicting the Local Tumor Stage and Circumferential Resection Margin Status of Rectal Cancer
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ÀÌ»ó¹Î(Lee Sang-Min) - ¼¿ï´ëÇб³º´¿ø ¿µ»óÀÇÇаú
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ÀÌÇý½Â(Lee Hye-Seung) - ºÐ´ç¼¿ï´ëÇб³º´¿ø º´¸®°ú
Abstract
¸ñÀû: ¼ö¼ú Àü ¹æ»ç¼± Ç׾Ͽä¹ýÀ» ¹ÞÀº Á÷Àå¾Ï ȯÀÚ¿¡¼ ±¹¼Ò Á¾¾ç º´±â¿Í ¼ö¼ú ÀýÁ¦¸éÀÇ Á¾¾ç ħ¹ü ¿©ºÎ Æò°¡¿¡ ´ëÇÑ Àü»êÈ´ÜÃþÃÔ¿µ°ú ÀÚ±â°ø¸í¿µ»óÀÇ Áø´Ü Á¤È®µµ¿¡ ´ëÇØ ¿¬±¸ÇϰíÀÚ ÇÏ¿´´Ù.
´ë»ó°ú ¹æ¹ý: µÎ ¸íÀÇ ¿µ»óÀÇÇаú Àǻ簡 µ¶¸³ÀûÀ¸·Î ¼ö¼ú Àü ¹æ»ç¼± Ç׾Ͽä¹ýÀ» ¹ÞÀº ÈÄ ½ÃÇàµÈ Àü»êÈ´ÜÃþÃÔ¿µ°ú ÀÚ±â°ø¸í¿µ»óÀ» º¸°í ±¹¼Ò Á¾¾ç º´±â¿Í ¼ö¼ú¸éÀÇ Á¾¾ç ħ¹ü ¿©ºÎ¿¡ ´ëÇØ ÆÇÁ¤ÇÏ¿´´Ù. Á¾¾ç°ú ÀáÀçÀû ¼ö¼ú ÀýÁ¦¸é °£ÀÇ °Å¸®¸¦ ¿µ»ó¿¡¼ ÃøÁ¤ÇÑ ÈÄ À̸¦ º´¸® °Ë»ç¿¡¼ ÃøÁ¤ÇÑ °á°ú¿Í ºñ±³ÇÏ°í ºí·£µå-¾ËÆ®¸¸ µµÇ¥¸¦ ÀÌ¿ëÇÏ¿© ÀÏÄ¡µµ¸¦ Æò°¡ÇÏ¿´´Ù.
°á°ú: ÃÑ 57¸íÀÇ È¯ÀÚ(Æò±Õ ³ªÀÌ 59.2¼¼; ¿©¼º 24¸í)°¡ ¿¬±¸¿¡ Æ÷ÇԵǾú´Ù. T º´±â¿Í N º´±â¿¡ ´ëÇÑ CTÀÇ Á¤È®µµ´Â ¿µ»óÀÇÇаú ÀÇ»ç 1¿¡¼ °¢°¢ 43.9%(95% ½Å·Ú±¸°£, 30.8~57.7%)¿Í 77.2%(64.2~87.3%)¿´°í, MRI¿¡¼ 63.2% (49.4~75.6%)¿Í 77.2%(64.2~87.3%)¿´´Ù. ¿µ»óÀÇÇаú ÀÇ»ç 2¿¡¼ CTÀÇ Á¤È®µµ´Â 54.4%(40.7~67.7%)¿Í 77.2%(64.2~87.3%), MRIÀÇ Á¤È®µµ´Â 68.4%(54.7~80.1%)¿Í 80.7%(68.1~90.0%)¿´´Ù. ÀýÁ¦¸é ħ¹ü ¿©ºÎ¿¡ ´ëÇÑ ¹Î°¨µµ¿Í ƯÀ̵µ´Â ¿µ»óÀÇÇаú ÀÇ»ç 1¿¡¼ CT´Â 83.3%(43.7~97.0%)¿Í 88.2%(76.6~94.5%)¿´À¸¸ç, MRI¿¡¼´Â 100%(61.0~100%)¿Í 90.2%(79.0~95.7%)¿´´Ù. ¿µ»óÀÇÇаú ÀÇ»ç 2¿¡¼´Â CT´Â 66.7%(30.0~90.3%)¿Í 88.2%(76.7~94.5%)¿´À¸¸ç, MRI¿¡¼´Â 100%(61.0~100%)¿Í 90.2%(79.0~95.7%)¿´´Ù. ºí·£µå-¾ËÆ®¸¸ µµÇ¥¸¦ ÅëÇØ º¸¾ÒÀ» ¶§ º´¸® °Ë»ç¿¡¼ ÃøÁ¤ÇÑ °á°ú¿Í µÎ ¿µ»ó °Ë»ç °£ÀÇ ÃøÁ¤ °á°ú´Â Å« Â÷À̸¦ º¸¿´´Ù.
°á·Ð: ÀÚ±â°ø¸í¿µ»óÀÌ Àü»êÈ´ÜÃþÃÔ¿µ¿¡ ºñÇØ Á» ´õ ³ôÀº Áø´Ü´ÉÀ» º¸À̱â´Â ÇÏÁö¸¸, ¼ö¼ú Àü ¹æ»ç¼± Ç׾Ͽä¹ýÀ» ¹ÞÀº Á÷Àå¾Ï ȯÀÚ¿¡¼ Àü»êÈ´ÜÃþÃÔ¿µ ¹× ÀÚ±â°ø¸í¿µ»óÀº ±¹¼Ò Á¾¾ç º´±â¿Í ¼ö¼úÀýÁ¦¸éÀ» Æò°¡ÇÏ´Â µ¥ Á¦ÇÑÀûÀÎ Áø´Ü´ÉÀ» º¸¿´´Ù.
Purpose: To measure the diagnostic accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) obtained after neoadjuvant chemoradiotherapy (CRT) in patients with rectal cancer for a prediction of the local tumor stage and circumferential resection margin (CRM).
Materials and Methods: Two independent radiologists reviewed CT and MRI obtained after neoadjuvant CRT. The accuracy of the local tumor staging and the diagnostic performance for the prediction of CRM involvement were calculated. The agreement between the measurements of the distance to potential CRM on both imaging modalities and the histopathology findings was assessed using Bland-Altman plots.
Results: 57 patients (mean age, 59.2 years; 24 females) were included. The accuracy of T and N staging were 43.9% (95% confidence interval, 30.8-57.7%) and 77.2% (64.2-87.3%) on CT and 63.2% (49.4-75.6%) and 77.2% (64.2-87.3%) on MRI for Observer 1. The accuracy of T and N staging were 54.4% (40.7-67.7%) and 77.2% (64.2-87.3%) on CT and 68.4% (54.7-80.1%) and 80.7% (68.1-90.0%) on MRI for Observer 2. Sensitivity and specificity on CRM involvement were 83.3% (43.7-97.0%) and 88.2% (76.6-94.5%) on CT and 100% (61.0-100%) and 90.2% (79.0-95.7%) on MRI for Observer 1. Sensitivity and specificity on CRM involvement were 66.7% (30.0-90.3%) and 88.2% (76.7-94.5%) on CT and 100% (61.0-100%) and 90.2% (79.0-95.7%) on MRI for Observer 2. Bland-Altman plots showed wide discrepancies between measurements of the distance to CRM on each CT and MRI and those on histopathology findings.
Conclusion: CT and MRI showed limited performance in predicting the local tumor staging and CRM involvement in patients with neoadjuvant CRT although MRI tended to show a better performance than CT
Ű¿öµå
Rectal Neoplasms, Multidetector Computed Tomography, Magnetic Resonance Imaging, Sensitivity and Specificity, Chemoradiotherapy
KMID :
1103720140700020123
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