Ayhan KUZU, Elif PEKER, Didem Yasemin SÖNMEZ, Ayşe ERDEN, Saba KİREMİTCİ

Preoperatif Rektum Kanseri Evrelemesinde MR Görüntülemenin Doğruluğu

Amaç: Bu çalışmada merkezimizde 1.0 Tesla Magnetik Rezonans (MR) cihazı ile faz dizilimli koil kullanarak preoperatif rektum kanseri evrelemesinin doğruluğunun değerlendirilmesi ve ince kesit MR teknikleri kullanarak sonuçların iyileştirilebilir olup olmadığının belirlenmesi amaçlanmıştır. Gereç ve Yöntem: Biyopsi ile rektum kanseri tanısı kanıtlanmış 84 hasta standart (tüm planlarda 8 mm kalınlığında kesitler) ya da ince kesit protokol (ek olarak tümörün uzun aksına dik 5 mm kalınlığında kesitler) kullanılarak Manyetik rezonans görüntüleme (MRG) ile prospektif olarak değerlendirilmiştir. Neoadjuvan tedavi alarak ya da almadan (standart MRG, n=15 ve ince kesit MRG, n=22) opere edilen hastalar analize dahil edilmiştir. TNM evrelemesi, çevresel rezeksiyon sınırı ve komşu organ tutulumu histopatolojik bulgular ile karşılaştırılmıştır. Bulgular: İnce kesit grubunda, tümör evresi histopatoloji (?=0.38, p

Accuracy of MR Imaging in Preoperative Staging of Rectal Cancer

Aim: In this study we aimed to evaluate the accuracy of preoperative rectal cancer staging in our center, using 1.0 Tesla Magnetic resonance imaging (MRI) with phased-array coils and determine if the results can be improved by adopting thin-section MRI techniques. Materal and Methods: Eighty-four patients with biopsy proven rectal cancer were prospectively evaluated by MRI using either the standard (8 mm sections in all planes) or the thin-section protocol (additional 5 mm sections in oblique axial plane perpendicular to the long axis of the tumor). Patients undergoing surgery with or without neoadjuvant therapy (standard MRI, n=15 and thin-section MRI, n=22) were included in the analysis. TNM stage, circumferential resection margin (CRM) and adjacent organ involvement were compared with histopathologic findings. Results: In the thin-section group, estimation of tumor stage was 59% accurate, showing fair agreement with histopathology (?=0.38, p

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