Objective To investigate the clinical characteristics， diagnosis， and treatment of gastric stromal tumor. Methods Clinical data of 217 patients with gastric stromal tumor from October 2007 to July 2011 were analyzed. Results The main clinical manifestation were abdominal pain， abdominal distension， bloody stools， abdominal mass， and so on. The tumour located at cardiac part， fundus of stomach， body of stomach， and pylorus part was 24 cases （11.0%）， 103 cases （47.5%）， 59 cases （27.2%）， and 31 cases （14.3%）， respectively. All the 217 patients underwent endoscopic or surgical resection and diagnosed by pathology and immunohistochemistry. The patients of high-low risk， low risk， intermediate risk， and high risk was 56 cases （25.8%）， 67 cases （30.9%）， 41 cases （18.9%）， and 53 cases （24.4%）， respectively. One hundred and forty patients were followed-up for 7-52 months （average 35 months）. Thirty-five patients of high risk were investigated about the drug treatment after the first operation：19 cases were treated by using imatinib （tumor progressed in 2 cases） and 16 patients were not （tumor progressed in 9 patients）. The rate of progression of patients treated by imatinib was significantly lower than another group （χ2=8.426， P=0.004）. In 11 patients with tumor progressed， tumor recurrnce in 4 cases， tumor recurrence with diffused abdominal cavity metastasis in 1 case， tumor metastasized to humerus in 1 case， metastasized to liver and abdominal cavity in 1 case， and metastasized to liver in 4 cases. Conclusions Gastric stormal tumor is lack of specific clinical manifestations. Complete excision of the tumor is the main therapy method， and imatinib can improve prognosis.
The anterior cruciate ligament (ACL) reconstruction mostly relies on the experience of surgeons. To improve the effectiveness and adaptability of the tension after ACL reconstruction in knee joint rehabilitation, this paper establishes a lateral force measurement model with relaxation characteristics and designs an on-line stiffness measurement system of ACL. In this paper, we selected 20 sheep knee joints as experimental material for the knee joint stability test before the ACL reconstruction operation, which were divided into two groups for a comparative test of single-bundle ACL reconstruction through the anterolateral approach. The first group of surgeons carried out intraoperative detection with routine procedures. The second group used ACL on-line stiffness measurement system for intraoperative detection. After that, the above two groups were tested for postoperative stability. The study results show that the tension accuracy is (? 2.3 ± 0.04)%, and the displacement error is (1.5 ± 1.8)%. The forward stability, internal rotation stability, and external rotation stability of the two groups were better than those before operation (P < 0.05). But the data of the group using the system were closer to the preoperative knee joint measurement index, and there was no significant difference between them (P > 0.05). The system established in this paper is expected to help clinicians judge the ACL reconstruction tension in the operation process and effectively improve the surgical effect.
Objective To investigate the differences of postoperative quality of life （QOL） between proximal gas-trectomy （PG） and total gastrectomy （TG） in patients with adenocarcinoma of esophagogastric junction （AEG）. Methods Eighty five patients with AEG （Siewert type Ⅱ or Ⅲ） who were underwent PG or TG surgery between Jan. 2011 andMar. 2012 at West China Hospital of Sichuan University were enrolled， to measure the QOL by using the Chineseversion of quality of life questionnaire core-30 （QLQ-C30） and the site-specific module for gastric cancer （QLQ-STO22）which were drawed up by the European Organization for Research and Treatment of Cancer （EORTC） in 12 months afteroperation. Results There were no any difference of clinicopathological features between patients in 2 groups （P＞0.05），such as age， gender， and so on. The scores of eating restriction， diarrhea， and dyspnea in PG group were lower than those of TG group （P＜0.05）， but scores of reflux and taste change were higher （P＜0.05）， no other significant differ-ence was found between the patients of 2 groups （P＞0.05）. Conclusion Both of PG＋gastric tube reconstruction and TG＋Roux-en-Y anastomosis in treatment of patients with Siewert type Ⅱ or Ⅲ AEG may lead to complications， but patients who underwent former surgery have better situation in eating restriction， diarrhea， and dyspnea， and patients who underwent later surgery have better situation in reflux and taste change.
