Applications of different modified posterior surgeries in thoracolumbar fractures / 中国矫形外科杂志

For the past few years.the number of patients with thoracolumbar fractures increased year after year.With the improvement of surgical instruments and surgical techniques and the health care workers'in-depth study about thoracolumbar fractures,posterior approach treatment of patients with thoracolumbar fractures has achieved an encouraging progress.Now summarization of research progress about operation opportunity,posterior instrumentation and modified posterior surgery is made in this paper.

CT Diagnosis of Metastatic Liver Leiomyosarcoma / 实用放射学杂志

Objective To analyze CT characteristics of metastatic liver leiomyosarcoma(MLL),and to improve the diagnostic accuracy of MLL.Methods CT manifestations and clinical characteristics of 5 patients with pathological-proved MLL were retrospectively analyzed.Plain and contrast-enhanced triphase(including arterial,portal phase in all cases and delayed phase in a part of cases) scans were performed.Results On plain scan,all lesions were hypo-dense."Bull-eye-sign" was found in two cases on contrast-enhanced scan,which is the typical metastatic feature.During arterial phase,the smaller lesions showed marked peripheral enhancement and central necrosis.The larger MLL presented as solid-cystic lesions,the parenchyma of tumor was rich in blood supply.Some cases presented mild hypo-dense or iso-dense comparing with the parenchyma of the liver on delayed phase.One case was misdiagnosed as hepatic hemangioma or focal nodular hyperplasia(FNH).Metastases were found out of the liver.Tumor thrombus of portal vein was not found in all of the cases.Conclusion MLL should be considered in the patients with history of extra-hepatic leiomyosarcoma,no marker expressions,no history of hepatitis,no tumor thrombus of portal vein and the special CT findings.

CT Diagnosis of Splenic Lesions:An Analysis of 33 Cases / 实用放射学杂志

Objective To evaluate the value of CT scan in diagnosis of the splenic lesions.Methods A retrospective analysis was made on the CT scans of 33 patients with surgically and pathologically proven splenic lesions,which included plain CT scan(n=33),biphasic contrast-enhanced CT scan(n=28)and contrast delay scanning(n=6).Results In 33 cases,non-neoplastic lesions were 6 cases,including tuberculosis(n=2),hematomas(n=3)and inflammatory pseudotumor associated with a cavernous hemangioma(n=1).Benign tumors were 13 cases,including cysts(n=5),hemangiomas(n=4),lymphanioma(n=1)and lymph-hemangiomas(n=3).Malignant tumors were 14 cases,including malignant lymphoma(n=8),metastases(n=4),malignant myofibroblastoma and hemangioendothelial sarcoma(n=1,respectively).Conclusion CT is of significant value in diagnosis of splenic lesions.