A study about associated CT findings of N staging in rectal carcinoma with pathological correlation
- VernacularTitle:直肠癌N分期相关影像学因素CT与病理对照研究
- Author:
Xiaopeng ZHANG
;
Jie LI
- Publication Type:Journal Article
- Keywords:
Rectal neoplasms;
Lymph node;
Neoplasm staging;
Tomography, X-ray computed
- From:
Chinese Journal of Radiology
2001;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relevant characteristic findings of rectal carcinoma in CT images which are associated with N staging.Methods Fifty-nine patients (38 male, 21 female, media age 58, range from 36 to 80 years old) underwent radical resection for rectal carcinoma after preoperative CT examinations were obtained. For N staging, pN0, pN1, pN2 were considered on the basis of pathological examination of excised specimens according to AJCC N staging criterion. Images were reviewed by two radiologists blindly using CT cine on workstation, making the consensus on the size, number and distribution of lymph nodes which were displayed perirectally, along superior rectal artery or along iliac vessels. The relationships between lymph node metastases and CT findings were analyzed statistically by SAS using Kruskal-Wallis test and ? 2 test. Results Lymph nodes were depicted in all node positive cases. Diameters of the largest nodes displayed in the group of pN0, pN1, pN2 were(4.13?3.21)mm, (7.43?3.27)mm, and (10.27?3.88)mm, respectively, which showed a statistically increase with N stage developing(? 2=23.842,P
