Objective To evaluate the efficacy of video-assisted thoracoscopic surgery for loop ligation in patients with spontaneous pneumothorax.Methods From April 2004 to December 2006,90 consecutive cases of spontaneous pneumothorax were subjected to video-assisted thoracoscopic surgeries for loop ligation in our department.The pulmonary bullae of the patients(

Objective To analyse the antibiotics susceptibility result of Neisseria gonorrhoeae(N.g) isolates.Method 95 strains of N.g were performed the in-vitro susceptibility test.MICs of penicillin, tetracycline, ciprofloxacin, levofloxacin, ceftriaxone, cefotaxime, cefepime, and spectinomycin were determined by agar dilution.Results Almost all of the N.g strains were susceptible to the first-line antibiotics used for treating the infection. The resistance rate to ciprofloxacin, tetracycline and penicillin were 100%, 78.9% and 68.4% respectively.Conclusion Although N.g is susceptible to first-line antibiotics used for treating the infections at the clinics, the situation of resistance to penicillin, tetracycline and ciprofloxacin is very serious.

Objective To investigate the dosimetric properties of PTW 60019 synthetic diamond detector in small photon beams.Methods A PTW 60019 synthetic diamond detector was tested under 6 and 10 MV photon beams,respectively.Linearity with dose,dose rate dependence and off-axis ratio were measured and compared to those measured by an IBA SFD.Percentage depth doses were measured and compared to those measured by an IBA SFD and a PTW 31010 semiflex chamber.Total scatter factors were measured and compared to those measured by an IBA SFD and a PTW 31016 PinPoint chamber.Results The dose response of a PTW 60019 synthetic diamond detector showed a good linear behavior as a function of dose,with observed deviations below 0.2％ over a dose range from 100 to 1 000 MU.The dose rate response was almost independent,with deviations below 0.2％ in the dose rate range from 37 to 614 MU/min.For the fields of 20-100 mm in diameter,there were dose differences in percentage depth doses within 1％ as compared to an IBA SFD and a PTW 31010 semiflex chamber.For the 10 mm diameter field,the differences were up to 5.8％ in the build-up region.Off-axis ratios measurements showed a good agreement among the involved detectors (＜ 1％).The higher differences appeared in the penumbra region.A good agreement was also found in terms of total scatter factor measurements for the related detectors.Conclusions The observed dosimetric properties of the PTW 60019 synthetic diamond detector indicate that it is a suitable candidate for small photon beam dosimetry.

Cardiomyopathy, Dilated ; pathology ; Humans ; Infant, Newborn ; Male

Objective To evaluate the surgical technique and procedures of transumbilieal breast augmentation with an inverse U-shape incision and insertion of saline-filled breast implants. Methods With specialized instruments, the subcutaneous tunnel was undermined to the inframammary crease after inverse U incision made along the umbilical border. The subpectoral space was dissected with a dissector after the advancement of obturator across the inframammary crease. The expander was inserted into the subpectoral pocket to be filled to obtain the high degree of symmetry of the breasts. Finally, the previous-ly prepared implants were inserted after the expander deflated and removed. Results All patients gained satisfactory results with no complications, such as hematoma, infection, implant deflation and Baker Ⅲ or Ⅳ capsular contracture. Conclusions Breast augmentation could be performed through umbilical inci-sion with the usage of saline-filled breast implant. This is an alternative of incisions in breast augmenta-tion.

Objective To investigate the pathological features,diagnosis and treatment of primary malignant melanoma in esophagus (PMME).Methods The clinical data of 3 patients with PMME who were admitted to the Beijing Friendship Hospital from January 2008 to June 2009 were retrospectively analyzed.All the patients received esophageal barium radiography,electronic fiberesophagoscopy,esophageal endoscopic ultrasonography,computed tomography,and underwent surgery.Adjuvant therapy and immunotherapy were applied postoperatively.Results The results of barium radiography showed irregular filling defect presentation in the distal esophagus.The results of endoscopy showed a purple black tumor with a length of 3-8 cm in the esophagus.The results of endoscopic ultrasonography showed that the tumor was derived from the mucosal layer with low echo density.The results of computed tomography showed thickness of the lower segment of the esophagus.All the 3 patients received left thoracic approach esophagectomy and esophagogastrostomy.Histopathology and immunohistochemistry confirmed malignant melanoma.The expressions of Mart-1,HMB-45 and S-100 antigen were positive.The survival time of 2 patients was longer than 3 years,and 1 patient died of metastasis 6 months after operation.Conclusions PMME is a kind of rare and malignant tumor with dismal prognosis.Surgical management is the first choice,adjuvant chemotherapy and immunotherapy are hopeful to increase the survival time of the patients.

Background and purpose:Stromal tumor is one of the common gastrointestinal mesenchymal tumors. There is certain understanding about the typical cases. However, the diagnosis of those occurring in rare location or with rare imaging findings is often difficult. This research summarized this kind of cases,in order to increase the radiological knowledge of the disease.Methods:This study retrospectively analyzed clinical, radiological and pathological data from 550 patients who had stromal tumor conifrmed by pathology in our hospital. Those with incomplete data were eliminated. Forty-nine patients were selected for further study according to the typical imaging findings.Results:Among these 49 patients, 9 were pathologically confirmed to have extra-gastrointestinal stromal tumor, while 40 patients had gastrointestinal stromal tumor. Among the patients with gastrointestinal stromal tumor, 22 were found in rare locations, 12 in retroperitoneal space, 3 in omentum majus and mesenterium, 5 in esophagus, and 2 in prostate. Obvious cystic degeneration was found in 16 patients. Bulky calciifcation, such as lfake or annulus, was found in 7 patients. The analysis result of risk-stratiifcation showed 19 patients were conifrmed as high-grade among the patients with tumors found in rare locations, 15 as high grade among those with obvious cystic degeneration, and 7 as high-grade among those with extra-gastrointestinal stromal tumor.Conclusion:Rare stromal tumor often occurs in the locations, such as retroperitoneal space, omentum majus and mesenterium. Obvious cystic degeneration and bulky calciifcation can be seen. The risk-stratiifcation of these patients often showed high-grade. Comprehensively analyzing its clinical features and imaging ifndings can help improve the diagnostic accuracy.

Objective To study the clinical result of the surgical treatment of upper cervical vertebra disease from high anterior cervical retropharyngeal approach.Methods Among 14 patients,there were 7 C_(2.3)disc hernia- rions combined with C_(2.3)dislocations,3 Hangman fractures,2 odontoid process fractures and 2 C_3 tumors.All patients underwent the high anterior cervical retropharyngeal approach.10 cases were given discectomy of C_(2.3)or focus clear- ance of C_3,iliac bone autograft or titanium cage filled and internal fixation with titanium plate.2 cases of odontoid process fractures were given anterior screw fixation.Results 14 cases got successful exposure.The decompression, reduction,lesion clearance and fusion with internal fixation were done in all patients.There were no important vascu- lar or nerve injuries.The surgical treatment could improve the spinal cord nerve function to a certain degree for the cases with compression of spinal cord.Conclusion Good exposure of upper cervical spine and effective surgical oper- ation could be achieved from high anterior cervical retropharyngeal approach,with minimal trauma and complication, and it was a favorable approach.

Objective To study CT findings of gastrointestinal lymphoma.Methods Conventional and enhanced CT data of 25 gastrointestinal lymphoma patients proved pathologically by gastroscope(8 cases),enteroscope(3),operation(5)and lymph node of neck puncture(9) were retrospectively analysed.Results All cases were secondary gastrointestinal lymphoma except one primary located in cardia.CT manifestations of gastric lymphoma included three kinds:(1)Widespread infiltration or multiple type (9 cases);(2)Limited type(3 cases);(3)polypus type(1 case):which had not been found by gastroscope.The CT value range of tumor was 20～42 HU with average of 31.3 HU.Most tumours showed homogeneous contrast enhancement.Enhanced value range of tumor was 15～33 HU with average of 23.5 HU.CT manifestations of intestinal lymphoma included:(1)Multiple nodus type(4 cases);(2)infiltration type(5 cases);(3)mesentery involved type(3 cases);(4)lump type(3 cases).Thickening mural were homogeneous except one showed low attenuation in the center of one extremely thickening wall.Conclusion Gastrointestinal lymphomas have slight to medium enhancement on comtrast-enhanced CT,while the medium enhancement is characteristic finding of this lesion.

Objective To investigate the application value of spiral CT spinal cord and intervertebral disk 3D recontruction in vertebra trauma.Methods 78 patients with vertebra trauma were examined by CT axial, the primal date of each were retrospectively inserted and reconstructed, all the cases use 3D,SSD and sagittal MPR, compared with routine 2DCT.Results Spinal cord was normal in 23 cases.Spinal cord was pressed in 39 cases.Spinal cord was transected in 16 cases.Intervertebral disk was damaged in 38 cases.Conclusion Spiral CT can do spinal cord and intervertebral disk 3D reconstruction , it can show vertebra trauma and display intervertebral disk damage intuitionistically,which has instruction in making reasonable cure project and judging cure effect.