Evaluation pitfalls of magnetic resonance imaging on rectal cancer before and after neoadju-vant chemoradiotherapy
10.3760/cma.j.cn115610-20230918-00104
- VernacularTitle:直肠癌新辅助放化疗前后的磁共振检查评估误区
- Author:
Yingshi SUN
1
;
Xiaoyan ZHANG
;
Jiaqi WU
Author Information
1. 北京大学肿瘤医院暨北京市肿瘤防治研究所医学影像科 恶性肿瘤发病机制及转化研究教育部重点实验室，北京 100042
- Keywords:
Rectal neoplasms;
Magnetic resonance;
Neoadjuvant chemoradiotherapy;
Response evaluation
- From:
Chinese Journal of Digestive Surgery
2023;22(10):1186-1193
- CountryChina
- Language:Chinese
-
Abstract:
Magnetic resonance imaging (MRI) has been the first choice for rectal cancer due to its superb soft tissue resolution. MRI can be used to identify important factors related to treatment and prognosis, including the tumor location, TNM staging, the status of mesorectal fascia, presence of extramural vascular invasion, and involvement of the peritoneal reflection. Clinicians can make optimal surgical planning and determine the need for neoadjuvant therapy according to these factors. Patients who received neoadjuvant therapy need to undergo MRI examination after the completion of therapy with the aim of determining subsequent treatment strategies. The authors review relevant literatures, summarize the limitations and misconceptions of MRI examination in the initial staging of rectal cancer and the re-staging after neoadjuvant chemoradiotherapy, with the aim of enabling imaging physicians and clinical physicians to fully understand the advantages and limitations of MRI examination for rectal cancer, and applying MRI examination to assist in formulating clinical diagnosis and treatment strategies for rectal cancer.
