CT Imaging Findings of Mesenteric Fascia Involvement in Lower Rectal Cancer and Correlation with Postoperative Local Recurrence
Objective To explore the CT imaging findings of mesocenteric fascia involvement in lower rectal cancer(LRC)and to analyze the relationship with postoperative local recurrence.Methods 99 patients with LRC who received total mesorectal excision(TME)in our hospital from January 2021 to January 2023 were selected.Enhanced CT examination was performed before surgery to observe the mesorectum(Mes)and rectal fascia(RF)involvement,and the CT imaging characteristics were summarized.All patients were followed up for 2 years after surgery.The local recurrence rate was counted,and the relationship between CT imaging characteristics and postoperative local recurrence was analyzed.Results The diagnostic accuracy rates of CT for stages T1,T2,T3 and T4 were 90.00％(9/10),86.21％(25/29),86.67％(39/45)and 80.00％(12/15)respectively,and the total diagnostic accuracy rate was 85.86％(85/99).In N staging,the diagnostic accuracy rates of NO and N1 were 91.38％(53/58)and 82.93％(34/41)respectively,and the total diagnostic accuracy rate was 87.88％(87/99).The diagnostic accuracy rates of non-involvement,degree Ⅰ,degree Ⅱ and degree Ⅲ of Mes and RF involvements were 86.67％(13/15),88.89％(24/27),87.88％(29/33)and 87.50％(21/24)respectively,and the total diagnostic accuracy rate was 90.91％(90/99).T staging＞stage T3 and stage N1,high Mes and RF involvement degrees and presence of distant metastasis were risk factors of local recurrence in patients with LRC(P＜0.05).Condusion CT imaging can accurately and clearly guide the diagnosis of T staging and N staging and Mes and RF involvements in patients with LRC,and the risk of postoperative local recurrence is high in lower rectal cancer patients with T staging＞stage T3,stage N1,high degrees of Mes and RF involvements and distant metastasis.
Rectal CancerMesenteriumFasciaCT ImagingPostoperative Local Recurrence
NETL
NSTL
万方数据
维普
