【Abstract】 Objective To evaluate the effects of allogeneic bone graft for reconstructing bone defect of clavicle aftertumor resection. Methods Nine patients received the surgical procedures for repairing and reconstructing bone defect afterresection of clavicle tumor from January 2000 to January 2006. There were 4 males and 5 females aged 12 to 68 years. Two patientswere diagnosed as having benign tumor and tumor-like lesion(stage Ⅲ according to Campanacci grading), and 7 as having primarymalignant tumor and metastatic cancer. Three lesions were located in acromial end, 2 in sternal end and 4 in shaft of clavicle. Twocases was accompanied by pathological fracture. According to Enneking’s functional evalutation, the results were excellent in 3 cases,good in 3 cases, fair in 1 case and poor in 2 cases. Based on the visual analogue scale (VAS), pain was rated as medium rest-pain in4 cases, as medium move-pain in 3 cases and heavy pain in 2 cases preoperatively. The tumor was resected with en bloc. Defectedclavicles were reconstructed by a part of allograft clavicle and plate. The patients with malignant tumor received neo-adjuvant chemotherapyand radiotherapy postoperatively. The results were evaluated according to control of tumor, rel ief of pain, bone healingand shoulder joint function. Results These patients were followed up 12 to 70 months (mean 34.6 months). There were no localrecurrence and metastases in all patients during the follow-up. No complications of immune rejection and deep infection wereseen. The normal shape of the shoulders was restored. Eight of all patients showed primary bone healing between allograft boneand host bone. The mean healing time was 5.4 months (3.2-6.8 months). Loosening of the plate and nonunion were seen in 1 case;and bone grafting was given again. Fracture of allograft occurred in 1 case after removing internal fixation. According to Enneking’s functional evulation, the results were excellent in 6 cases and good in 3 cases at 3 months after operation; excellent in 4 cases, goodin 1 case and fair in 1 case among 6 patients who were followed up for 24 months. The VAS results of postoperation showed l ightmove-pain in 2 cases at 3 months, l ight move-pain and medium move-pain in 1 case respectively and no pain in 7 cases 12 months after operation. Conclusion Allogeneic clavicle is a useful and rel iable reconstructive material for clavicle defect due to tumor resection. The satisfactory shape and favorable function of the shoulder may be recovered after this procedure.
Global Minimum Essential Requirements (GMER) is focused on training medical students to equip them with the scientific foundation of medicine, clinical techniques, a doctor’s professional ethos, social sciences, health economics, medical information management and communication skills, etc. Based on GMER and its evaluation and through the integration of GMER’s seven requirements into the objectives of the clinical-medicine major, Shanxi Medical University is reforming medical education to carry forward high quality education in a comprehensive way. These reforms include adjustments in the content, methods and means of the teaching in order to improve teaching conditions and optimize the curriculum structure, and to enhance the quality of education. At the same time the management system is being reformed and sustainability-featured mechanisms of management and operation are being created, to make simulated hospital a base wherein GMER is fully followed. Simulated hospital for clinical teaching is built to cultivate the students’ abilities in clinical thinking and clinical education. This takes into full consideration training in professional quality, the cultivation of students’ comprehensive ability and GMER’s aim of reaching the final objective, namely, the following four transformations of the students: from essential knowledge to clinical practice, from single technique to all-round ability, from patterning thought to integrated and innovative thought and from a student of clinical medicine to a professional doctor. The objective is to fulfill the task of teaching clinical medicine in a more favorable way, promoting the reform and development of China’s medical education and keeping pace with changes in medical education elsewhere in the world.
Objective To evaluate the current situation of randomized controlled trials/ clinical controlled trials (RCT/CCT) on chronic gastritis and whether it could offer reliable evidence for clinical practice in China. Method RCT/CCT on chronic gastritis from eight Chinese clinical journals were searched manually and assessed according to international standard. Results 823 issues containing 213 therapeutic articles were searched and 81 RCT/CCT were identified and assessed. Conclusions The quantity and quality of RCT/CCT on Chronic gastritis in China could not meet the need of clinical practice. RCT/CCT of western medical therapy are much better than those of traditional Chinese therapy and integrated traditional Chinese and western medical therapy ones.
To investigate the cl inical results and the mechanism of bone heal ing for the repair of bone defects following tumor resection with novel interporous TCP bone graft, and to test the hypothesis of “structural transplantation”. Methods From January 2003 to December 2005, 61 cases of various bone defects following the curettage of the benign bone tumors were treated with interporous TCP, with 33 males and 28 females, including bone fibrous dysplasiain 8 cases, bone cyst in 23 cases, eosinophil ic granuloma in 12 cases, enchondroma in 13 cases, non-ossifying fibroma in 2 cases, and osteoblastoma in 3 cases. Tumor sizes varied from 1.5 cm × 1.0 cm to 7.0 cm × 5.0 cm. The plain X-ray, single photon emission computed tomography (SPECT) and histology examination were obtained at various time points after operation. The in vivo biodegradation rate of the implanted TCP was evaluated based on a semi-quantitive radiographic analyzing method. Histopathology examination was performed in 1 revision case. Results All the patients were followed up for 5 to 24 months after operation. They all had good wound heal ing and bone regeneration. There was neither significant reverse reaction to the transplanted material nor locally inflammatory reaction in all of the cases. The bone defects were repaired gradually from 1 to 6 months after operation (bone heal ing at average 2.6 months after surgery) with a bone heal ing rate up to 96.7%. There was only 1 recurrence case (eosinophil ic granuloma in ischium) 3 months after operation. Given revision operation, this case gained bone heal ing. Radiographically, the interface between the implanted bone and host bone became fuzzy 1 month after implantation, indicating the beginning of new bone formation. Three months later, the absorption of the interporous TCP was noticed from peripheral to the center of the implanted bone evidenced by the vague or fuzzy realm. New bone formation could be seen both in peri pheral and central areas. Six months later, implanted bone and host bone merged together and the bone defect was totally repaired, with 78.9% degradation rate of the implanted TCP. Twelve months later, the majority of the implanted bone was absorbed and bone remodel ing was establ ished. In the cases that were followed up for 24 months, the function of affectedextremity was excellent with good bone remodel ing without recurrence. In 2 cases, SPECT showed that nucl ide uptake could be observed in implanted site and the metabol ic activity was high both in the central as well as the peripheral areas of the graft 1 month after implantation, which was an evidence of osteogenesis. Pathologically, the interporous TCP closely contacted the host bone inside the humerus 1 month after grafting. The interface between the implanted bone and host bone became fuzzy, and vascularized tissue began growing inside the implanted graft as a “l ining” structure. Conclusion The interporous TCP proves to be effective for cl inical reparation of bone defects following tumor resection. The inside three-dimensional porous structure simulates the natural bionic bone structure which is suitable for recruitment related cells in-growth into the scaffold, colonizing and prol iferation companied with the process of vascularize, finally with the new bone formation. The novel interporous TCP may boast both bone conductive and bone inductive activities, as an appeal ing “structural transplantation” bone graft.
Traditional classifiers, such as support vector machine and Bayesian classifier, require data normalization for removing experimental batch effects, which limit their applications at the individual level. In this paper, we aim to build a classifier to distinguish lung cancer and non-cancer lung tissues (pneumonia and normal lung tissues). We identified gene pairs as signatures to build a classifier based on the within-sample relative expression orderings of gene pairs in a particular type of tissues (cancer or non-cancer). Using multiple independent datasets as the training data, including a total of 197 lung cancer cases and 189 non-cancer cases, we identified three gene pairs. Classifying a sample by the majority voting rule, the average accuracy reached 95.34% in the training data. Using multiple independent validation datasets, including a total of 251 lung cancer samples and 141 non-cancer samples without data normalization, the average accuracy was as high as 96.78%. The rank-based signature is robust against experimental batch effects and can be used to diagnose lung cancer using samples measured by different laboratories at the individual level.