Although patients with intestinal polyposis are not usual in clinical at present,it is still difficult to make early diagnosis because of the lack of specific clinical manifestations So clinicians should know the etiology of intestinal polyposis progress,master the methods of early diagnosis,select the appropriate treatment and do the follow-up regularly,which may help improving the prognosis of patients and improving the quality of survival.Early detection,early diagnosis and early treatment can largely avoid possible malignant polyps cancerous changing,which may not only have a significant effect on the quality of patients'life,but also have great significance to alleviate the burden of the patient's family.

Objective:To explore the correlation between the number of sentinel regional lymph node (SALN) and non-sentinel regional lymph node (NSALN) metastasis in patients with early breast cancer after sentinel regional lymph node (SALN) biopsy.Methods:Retrospectively selected 400 female patients with early breast cancer who underwent SALN biopsy at the Department of Thyroid and Breast Surgery, Yijishan Hospital of Wannan Medical College from January 2016 to July 2021, and summarized and analyzed their clinical case data. The Chi-square test or Fisher exact probability method was used to compare the count data between groups. Perform single-factor analysis on the research indicators, then screen out indicators with statistically significant differences, then perform multi-factor Logistic regression analysis, draw a receiver operating characteristic curve, and combine the area under the curve to establish a predictive model.Results:SALN biopsy was performed in 400 patients with early breast cancer. A total of 1 504 lymph nodes were detected in 320 cases of total mastectomy, with an average of 4.7, 47 cases of macrometastasis, and 2 cases of postoperative macrometastasis. The false negative rate was 4.3%. Among 400 cases, 67 cases were positive for SALN, and the positive rate was 16.75% (67/400). The results of univariate analysis showed that the number of tumor thrombus in the vessel, the number of positive SALN and the metastasis of NSALN were closely related ( χ2=8.775, 16.53, P=0.003). The results of multivariate Logistic regression analysis showed that the number of tumor thrombi and SLN-positive ≥3 in the vessel were independent predictive risk factors for NSLN metastasis ( OR=16.149, 95% CI: 3.016-86.473, P<0.001; OR=31.76, 95% CI: 5.242-192.43, P<0.001). SALN positive was closely related to NSALN metastasis, but as the number of SALN detected increases (more than 6) and when only 1 to 2 SALN was positive, the probability of NSALN metastasis was significantly reduced ( P<0.05). Conclusions:The positive number of SALN and intravascular tumor thrombolus were closely related to NALN metastasis. SALN positive number ≥3 was the most important independent predictor of NSALN metastasis. The recurrence risk of sentinel lymph node can be reduced by increasing the number of SALN detected, when 1-2 positive sentinel lymph node are detected and the number of sentinel lymph node detected >6, axillary lymph node dissection can be exempted as appropriate.