Objective To evaluate the early diagnosis of patients with T1 and Tis breast cancer,and to ana-lyze and explore the diagnostic efficacy of breast cancer.Methods 242 patients with T1 and Tis breast cancer who received treatment were selected.The diagnostic accuracy and detection rate of two kinds of imaging methods for breast cancer were compared.Results 35(13.46%),91(35.00%),109(41.92%) and 25(9.62%) of the dense breast were classified by the X-ray of the breast.In the detection rate, fat type and a small amount of fiber gland body breast,the detection rate of X ray was significantly higher than that of ultrasound examination,the differences were sta-tistically significant (χ2 =8.74,21.70,all P<0.05);the two methods for the detection of fiber gland type breast had no statistically significant difference (χ2 =0.14,P>0.05).For the dense breast,the detection rate of ultrasonography was significantly higher than breast X-ray,and the difference was statistically significant (χ2 =6.64,P<0.05).In accuracy,the diagnostic accuracy of the two methods was the same for the fat type.For a small amount of fiber gland type breast,breast X-ray diagnosis was higher than ultrasound.There were no significant differences between the two groups (χ2 =0.00,0.69,1.33,3.42,all P>0.05).Conclusion For a small amount of T1 and Tis breast cancer patients,the early screening accuracy and detection rate of ultrasound examination is more suitable for the volume of T1 and Tis in patients with breast cancer.

[Objective]To analyze reason of congenital infantile coxa vara to be misdiagnosed as infantile dislocation of hip joint.[Method]There were 6 patients(6 hip join)congenital infantile coxa vara being misdiagnosed as infantile dislocation of hip join in 54 patients(73 hip join)and treated by expectant treatment as infantile dislocation of hip join.The curative effect of 6 patients were not good,after serious medical examination,careful reading image data,paying attention to curative effect,6 patients were confirmed to be diagnosed as infantile dislocation of hip join and not infantile dislocation of hip join.[Result]The features for diagaosis of congenital infantile coxa vara were:the big greater trochanter of femur and its position moving up,short spacious neck of femur,spacious medial blank in hip joint,superposed neck of femur and lesser trochanter of femur,praeter propter exponent of acetabulum,acceptable succession of Shenton’s line,enlarged angle of femoral head epiphysis,late center of ossification,incorporated abnormity such as breves femoral bone,bowing of femoral bone,abortive clavicle and bones of cranium,equines.[Conclusion]The second center of ossification of femoral head is appeared 6～9 monthes after birth,and it is difficult to discriminate congenital infantile coxa vara and infantile dislocation of hip join before this.Early to realize symptom,physical sign and character of image of congenital infantile coxa vara is significant for correct diagnosis and can avoid misdiagnosis and mistreatment.

Polylactic acid (PLA) and its copolymer are biodegradable polymer materials which are widely used in the medical field because of their excellent mechanical properties, chemical stability, good biocompatibility, and biodegradability. In this paper, research advances in the study on polylactic acid and its application in vascular stent are discussed.

The paper introduces the definition of smart phone,operating mobile communication network and hidden danger about safety,and definition and advantages of SSL VPN,states the application of SSL VPN technology in the direct network report of epidemic situation information of infectious diseases combining with SSL VPN technology and remote connection,analyzes the work principle and specific operation process,achieves safety login to the China Information System for Disease Prevention and Control with smart phones,and completes normal business data processing.

Mechanical vascular anastomosis is a technique that uses special vascular anastomotic devices to entirely or partly substitute vascular anastomotic suturing . With the development of manufacture and the emergence of new biomaterials, this technique gained great progress and a large number of research both on preclinical and clinical has been carried out since the 50～60s of last century. The present paper reviewed the development of mechanical vascular anastomosis, analysed their advantages and deficiencies, and pointed out the research trend on these techniques.

[Objective] To investigate the diagnosis and treatment of congenital oblique talus in clinical practice.[Methods]Clinical situation of thirty-one patients displayed tarsoptosis and pas valgus,collapse in medial longitudinal instep,and with no talipes calcaneus,no contraction of tendon and no rigidity.All instep of the patients were restored to normal by chirismus.The X-ray of normotopia showed that axial ray of talus was declivent to wall and was angulated with No.1 metatarsal bones.The X-ray of lateral position showed that semiluxation of articulatio talonavicularis was noted,and axial ray of talus and No.1 metatarsal bones was not normal.The X-ray of lateral position of maximal plant flex and entropion showed that axial ray of talus and No.1 metatarsal bones was normal.Twenty-seven cases were cured by manipulation,4 cases were cured by operation,31 cases were cured by orthopaedic orthosis.[Results]All cases were curative during a follow-up of 12 to 24 months(mean,10 months).All outline forms of feet were good and no valgus calcaneus was found,the medial longitudinal instep were restored,the function of ankle and toes was normal,and the pedal force of enstrophe with ecstrophy was balance.The X-ray of normotopia showed that the angle of axial ray of talus to No.1 metatarsal bones was normal in 26 cases and ≤10? in 5 cases.Kite's angle was normal in 29 cases and ≤20? in 2 cases.The X-ray of lateral position showed that articulatio talonavicularis was good in 29 cases and ≤25? of talus to calcaneus in 6 cases.[Conclusion]Congenital oblique talus in infants can be cured by manipulation or operation.The prognosis is good.

[Objective]To evaluate the application value of minimally invasive release operation about congenital vertical talus(CVT).[Method]All operation were operated with single method by author.Firstly,Achilles tendon,capsulotomy of the ankle and subtalar joint were released through a small straight posterior inside of Achilles tendon end point.Secondly,astragaloscaphoid and subtalar front joint were released bluntly through a straight posterior incision.Thirdly,based on circs subtalar joint were released through calcaneocuboid articulation outside foot.Then one K-wire were passed through the body of talus from its axis,and passed through instep after reposition of astragaloscaphoid joint.Two K-wires was passed through calcaneus to talus from planta.[Result]Eight cases were available for follow-up from 17 to 36 months(mean,28 months),follow-up results was evaluated by using a version of Adelaar and Kodros score,there were excellent result in 1 foot,good in 5,fair in 2.The presence of hindfoot valgus and forefoot abduce were noted in one foot,forefoot pronation was appeared in one foot.Two parameters-talar and calcaneus axis-first metalarsal base angles,calcaneus talus angles of eutopic and lateral radiograph were basally normal.[Conclusion]Operative reduction has been advocated as the only effective treatment for CVT,it is the best choice to use minimally invasive release operation for infant.

Additive manufacturing (AM) is a collection of technologies based on the layer-by-layer manufacturing. Characterized by its direct manufacturing and rapidity, it has been regarded by the Economist Journal as one of the key techniques which will trigger the third industry reformation. The present article, beginning with a brief introduction of the history of AM and the process of its major technologies, focuses on the advantages and disadvantages and medical applications of the technique.
Medicine ; Printing, Three-Dimensional

Objective To study the effects of Tan Ⅱ A on the expression of c-Met and HIF-lα in gastric cancer SGC7901 cells under hypoxia and the correlation between c-Met and HIF-lα expression. Methods The model of hypoxia was established by CoCl2. There were three groups; normal control group, hypoxia control group, and hypoxia combined with different concentrations of Tan ⅡA group. After Tan ⅡA was added to the media with 0.5, 2.0 and 10.0 mg/L respectively for 48 h under hypoxia, the expression of HIF-1α and c-Met protein was detected by immunocytochemical staining. Results Immunocytochemical staining revealed that the expression of HIF-1α and c-Met protein was inhibited by Tan ⅡA in a dose-dependent manner under hypoxia. High positive correlation was found between the expression of HIF-1α and c-Met (n = 4, r = 0. 996, P <0.01). Conclusion Tan ⅡA might inhibit the expression of c-Met protein via down-regulation of HIFlα protein expression under hypoxia, suggesting that Tan ⅡA might play an important role in fighting against hypoxia-stimulated invasion and metastasis of tumor.

BACKGROUND:With the development of the oral cavity planting technology, dental implants have been strongly retained and stabilized, characterized as both aesthetic appearance and functional achievements. Especial y, they are accepted by more and more patients due to no damage to adjacent teeth. However, diabetes may not only lead to periodontal disease, but also result in delayed healing of the oral mucosa and alveolar bone as wel as infection. OBJECTIVE:To summarize the relationship between diabetes and peri-implantitis, and focus on the maintenance of dental implants for diabetic patients. METHODS:A computer retrieval of PubMed and CNKI databases was performed for relevant articles published from January 1980 to January 2016 using the keywords of“diabetes;peri-implantitis”in English and Chinese, respectively. RESULTS AND CONCLUSION:We confirm that diabetes is a relative contraindication to implant restoration, but the use of a series of methods that ensure the successful osseointegration, including blood glucose control, strictly prohibiting early loading or multi-implant restoration for single alveolar bone, anti-infection, implant surface modification, can make high success rate for diabetic patients. This brings the gospel to diabetic patients who hope to solve the problem of missing teeth by implant-supported prosthesis.