Association of CT features with TNM stage and pathology of patients with rectal cancer and their significance in evaluation of efficacy and prognosis.

Purpose: To explore the associations of computed tomography (CT) features with tumor-node-metastasis (TNM) stage and pathology of patients with rectal cancer and their significance in the evaluation of efficacy and prognosis.

Methods: A total of 83 rectal cancer patients who were operated in our hospital were collected. CT examination was performed before operation, and pathological examination was conducted after operation. The influence of CT stage on the prognosis of patients with rectal cancer was assessed.

Results: Postoperative pathological examination showed that there were 15 cases in T1-T2, 41 cases in T3 and 27 cases in T4. The results of CT examination showed that there were 15 cases in T1-T2, 40 cases in T3 and 28 cases in T4, and the sensitivity was 93.18%. It can be seen that the results in the two examinations were similar. The postoperative pathological examination revealed that lymph node metastasis occurred in 57 cases, and the main metastatic sites were the left and right pelvic cavity, near the intestine and iliac vessels. CT also confirmed that 22 cases had no lymph node metastasis, 4 of which were pathologically diagnosed with lymph node hyperplasia after operation. The consistency of results in the two examinations was lower. The survival rate of patients with stage A, B, C and D rectal cancer was 85.33%, 63.44%, 36.12% and 11.14%, respectively.

Conclusions: CT scan plays an important role in the preoperative staging of rectal cancer, which is helpful for judging the tumor site and infiltration, and highly accurate for T1-T2 lesions, but has limitations for lymph node metastasis. CT scan also has great value for distant metastasis, and contributes to the development of clinical therapeutic regimens for patients with rectal cancer in different stages. CT stage has an influence on the prognosis and patient survival.