Objective To investigate the effect of microecological agents on the change of intestinal barrier function after surgery of colorectal cancer. Methods Seventy-two patients were randomized into control group (36 cases) and test group (36 cases). Both groups received the same treatments excepted that the microecological agents were used in test group. The infection rate of incisional wound, first time of passage gas by anus, incidence rate and time of postoperative diarrhoea, incidence rate of albuminemia, the time of antibiotics administration, duration of fever, the level of D-lactic acid and urine lactulose/mannitol(L/M) were compared. Results In test group, first time of passage gas by anus [(3.1 ±1.2) d],incidence rate of albuminemia (11.1%, 4/36), time of postoperative diarrhoea [ ( 6.2 ±3.1) d ] and duration of fever [(5.1 ± 1.3) d] were lower than those in control group (P< 0.05). The levels of D-lactic acid and urine IVM in both groups at the first day were increased significantly(P < 0.05 ). The levels of D-lactic acid in both groups at the eighth day were decreased significantly (P <0.05). Conclusions Microecological agents can decrease intestinal permeability and maintain the intestinal barrier function after operation. It may be helpful for the recovery of patients after surgery of colorectal cancer.

Objective To assess the usefulness of magnification mamography in breast tumor. Methods Both of the mammographic phantom and the breast of 30 cases with breast mass were underwent the magification mammography and the general mammography , to contrast study the shape, margin, calcification , strand of mass in two methods. Results The accuracy rate of diagnosis in 30 cases with benigh and malignant tumor underwent the magnification mammography was 90% , which was greater than that underwent the general mammography. Conclusion The magnification mammography can help to early detect the breast tumor and improve the rate of checkout and dianosis accuracy.

Objective To investigate the safety of hip arthroplasty during the perioperative period in aged patients with femoral neck fracture .Methods The clinical data in 56 elderly cases of femoral neck fracture treated by hip arthroplasty ,aged more than 65 years old ,were performed the retrospective analysis .Results Among 56 cases ,54 cases hospitalized for 21d[(18-31)d] and suc-cessfully were discharged ,the Harris scores were increased from preoperative 30 (0 -38) to postoperative 83 (72 -91) ,the func-tion of hip joint was obviously improved ;2 cases with the preoperative poor tolerance score died during perioperative period ,there were 3 cases(5 .4% ) of postoperative hip hematoma ,1 cases(1 .79% ) of postoperative hematoma developed secondary bacterial in-fection after puncture and 3 cases (5 .4% ) of postoperative posterior dislocation in the early stage and no case of deep venous thrombosis (DVT) accompanying clinical symptoms .Conclusion Hip arthroplasty is a effective measure for treating aged patients with femoral neck fracture .But those patients with poor operative tolerance should select this operation cautiously