Magnetic resonance imaging for preoperative staging of rectal cancer in clinical practice: high accuracy in predicting circumferential margin with clinical benefit

2007 ◽  
Vol 9 (5) ◽  
pp. 412-419 ◽  
Author(s):  
P. Videhult ◽  
K. Smedh ◽  
P. Lundin ◽  
W. Kraaz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Clinical Practice ◽  
Magnetic Resonance ◽  
Clinical Benefit ◽  
Preoperative Staging ◽  
High Accuracy ◽  
Circumferential Margin ◽  
Resonance Imaging

Preoperative staging of rectal cancer by endoluminal ultrasound vs. magnetic resonance imaging

1994 ◽  
Vol 37 (12) ◽  
pp. 1189-1193 ◽  
Author(s):  
Walter Thaler ◽  
Stefan Watzka ◽  
Federico Martin ◽  
Giuseppe La Guardia ◽  
Konrad Psenner ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
Preoperative Staging ◽  
Resonance Imaging ◽  
Endoluminal Ultrasound

scholarly journals Characteristics and Prognostic Significance of Preoperative Magnetic Resonance Imaging-Assessed Circumferential Margin in Rectal Cancer

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaoji Ma ◽  
Xinxiang Li ◽  
Linghui Xu ◽  
Debing Shi ◽  
Tong Tong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Local Recurrence ◽  
Prognostic Significance ◽  
Preoperative Magnetic Resonance Imaging ◽  
Circumferential Margin ◽  
Resonance Imaging ◽  
Preoperative Magnetic Resonance

Purpose. To study the characteristics and prognostic significance of preoperative magnetic resonance imaging- (MRI-) assessed circumferential margin (CRM) in rectal cancer.Methods. Patients underwent preoperative high resolution pelvic MRI, followed by resection of primary tumor. The relationship between MRI-assessed CRM and pathological CRM (pCRM) was studied, and survival analysis was used to determine the prognostic significance of MRI-assessed CRM.Results. Of all the 203 patients, the total accuracy of MRI-assessed CRM for predicting involvement of pCRM was 84.2%, sensitivity was 50%, and specificity was 86.8%. Anterior tumors were more possible to assess involvement of CRM by MRI, while the false positive rate was significantly higher than lateral or posterior tumor (87.5% versus 50%,p=0.0002). The 3-year local recurrence, disease-free survival, and overall survival rates were 35.6%, 58.1%, and 85.2% in patients with involved mrCRM, compared with 8.9%, 78.9%, and 92.3% in patients with clear mrCRM. In multivariate analysis, MRI-assessed CRM found an independent risk factor for local recurrence, with a hazard ratio of 3.49 (p=0.003).Conclusions. High resolution MRI was accurate to assess CRM preoperatively, while anterior tumor should be assessed more cautiously. Involvement of mrCRM was significantly associated with local recurrence regardless of pCRM status.

scholarly journals The Utility of Magnetic Resonance Imaging in the Multidisciplinary Treatment of Patients with Rectal Cancer

2021 ◽  
Author(s):  
Hălmaciu Ioana ◽  
Suciu Bogdan Andrei ◽  
Russu Cristian ◽  
Butiurcă Vlad Olimpiu ◽  
Bacalbașa Nicolae ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
Neoadjuvant Therapy ◽  
Multidisciplinary Treatment ◽  
Preoperative Staging ◽  
Resonance Imaging ◽  
The Status ◽  
Magnetic Resonance Imaging Mri

Rectal cancer is one of the most common types of cancer in both men and women. In recent years, the importance of magnetic resonance imaging (MRI) has greatly increased in the multidisciplinary treatment of patients with rectal cancer. MRI has a particularly important role in the most accurate preoperative staging of these patients, both in terms of assessing the local invasion of the tumor and in terms of assessing the status of pelvic lymph nodes. Many patients with rectal cancer, especially those in the advanced stage of the disease, in the preoperative period undergo neoadjuvant radio chemotherapy. The evaluation of the clinical response of these patients to neoadjuvant therapy is of crucial importance both in terms of personalized treatment and in terms of their prognosis. In this regard, MRI has its clearly defined role at present in evaluating the efficacy of neoadjuvant therapy, as well as in postoperative follow-up.

Imaging Strategies for Rectal Cancer Initial Staging: Does Pelvic Computed Tomography Provide Significantly Additional Findings when High-resolution Magnetic Resonance Imaging has Been Performed?

2020 ◽  
Vol 16 (8) ◽  
pp. 1029-1033
Author(s):  
Li-Yan Liu ◽  
Li-Heng Liu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Clinical Benefit ◽  
Pelvic Bone ◽  
Resonance Imaging ◽  
New Findings ◽  
Initial Staging

Background: Initial staging of rectal cancer is done by high-resolution magnetic resonance imaging (MRI), however, pelvic computed tomography (CT) is also frequently used. The aim of this study was to evaluate the added clinical benefit of pelvic CT or whether it can alter the initial staging or not. Methods: The study was composed of 187 patients with rectal cancer. Firstly, imaging except pelvic CT was evaluated. Secondly, the pelvic CT was evaluated and the staging was adjusted according to the new findings. Subsequently, the two staging results were compared to investigate the added clinical benefit of pelvic CT. Results: Compared with the imaging data except pelvic CT, new findings revealed by the pelvic CT included metastases of the pelvic bone (n = 1) and pelvic peritoneum (n = 3). However, the new findings did not change the primary staging. Of the three patients with pelvic peritoneal metastasis, two were already determined with peritoneal involvement and ascites by abdominal CT, and the third patient was observed with liver and distant lymph node metastasis. Thus, none of their initial stagings needed to be changed. Conclusions: The addition of pelvic CT to the pre-treatment imaging strategy cannot provide added clinical benefit for the primary evaluation of rectal cancer.

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