Ziprasidone Injection for Agitation in Schizophrenic Patients：A Meta-Regression Analysis / 中山大学学报(医学科学版)

@#【Objective】To evaluate the efficacy of ziprasidone injection and the related influencing factors for treating agitation in schizophrenic patients based on published literature in English or Chinese. 【Methods】We searched PubMed， EMBASE， Web of Knowledge， Cochrane Library， Wanfang data， Chinese Journal Full- Text Database（CJFD），Chinese Biomedical Literature Database（CBMdisc）and VIP Chinese Technology Periodical Database（VIP）. The Consolidated Standards of Reporting Trials（CONSORT）statement was used as a criterion for screening and assessing the literature. Meta-analysis and meta-regression were conducted by using STATA. With the effect size as the dependent variable and sex，age，baseline PANSS scale total score and oral antipsychotics as the covariates ，the meta- regression model was analyzed. 【Results】The Grades of Recommendation ，Assessment ，Development and Evaluation（GRADE） approach was employed to rate the overall quality of evidence. A total of 14 studies（5 in English and 9 in Chinese）were included in meta analysis and meta regression. The samples were ，respectively，1 197 and 1 149 at baseline and after treatment. Random effect Meta analysis showed that ziprasidone injection had significant efficacy in the treatment of agitation symptoms［SMD=2.04，95%CI（1.47，2.61），P = 0.000］. Meta regression revealed that the efficacy was related to baseline PANSS scores（t = 5.57 ，P = 0.011）and oral antipsychotics（t = 4.07 ，P = 0.027），but irrelevant to age（t = 0.74，P = 0.539）and language published（t = -0.57，P = 0.625）. The efficacy was better in female patients than that in male patients （t = -2.95 ，P = 0.060）. 【Conclusion】 Ziprasidone injection has significant efficacy in schizophrenia patients with agitation symptoms and the efficacy may be enhanced in those patients with higher baseline PANSS score and added with oral antipsychotics.

Research on magnetoacoustic tomography with magnetic induction reconstruction based on improved time inversion algorithm / 医疗卫生装备

Objective To develop a new algorithm to reconstruct the distribution of acoustic sources of magnetoacoustic tomography with magnetic induction(MAT-MI)in the acoustic inhomogeneous media,which is developed on the basis of generalized finite element method (GFEM) and modified time inversion algorithm. Methods The acoustic and acoustic coupling theory and the basic equations of acoustics were used to study the forward and inverse problems of the acoustic inhomogeneous concentric sphere magneticacoustic coupling model. The solution of acoustic non-uniform media wave equation based on GFEM was proposed.The method solved the problem of acoustically inhomogeneous media sound source reconstruction and conductivity reconstruction.At the same time,the distribution of velocity was reconstructed by rotating the pairs of transducers and the time reversal algorithm. Results The proposed algorithm could accurately reconstruct the acoustic source distribution in acoustic inhomogeneous media,and could obtain the distribution of sound velocity during the reconstruction of sound source and recover the image well. Conclusion The proposed algorithm had its feasibility and effectiveness verified,and gains advantages in MAT-MI reconstruction of acoustic inhomogeneous media.

Electroconvulsive treatment for geriatric depression: a systematic review of randomized clinical trials / 上海交通大学学报（医学版）

Objective·To explore the clinical effectiveness and safety of electroconvulsive therapy (ECT) in elderly patients with depression.Methods·Searches were made in PubMed,EMBase,Web of Knowledge,CNKI,Wanfang,VIE CBMDisc databases and etc.CONSORT (Consolidated Standards of Reporting Trials) statement were used to assess the methodological quality of the studies.RevMan and STATA were used to do meta analysis.Results·Ten studies were included in this systematic review.The studies which used Hamilton depression rating scale (HAMD,n=5) and Montgomery-(A)sberg depression rating scale (MADRS,n=3) to access depressed symptom were analyzed.Sample size was 306 and 290 before and after treatment,respectively.The depressive symptoms were significantly improved after ECT treatment estimated by either HAMD (Z=6.39,SMD=3.64,P=0.000) or MADRS (Z=15.47,SMD=2.12,P=0.000).There was no difference of Mini-mental State Examination (MMSE) scores before and after the treatment (Z=1.47,P=0.140).The incidence of adverse events of headache,confusion,drowsiness,nausea and vomiting was more than 5％.Conclusion·Depressed symptoms are significantly improved in geriatric depression after ECT.The overall cognitive impairment is not obvious,but headache and disturbance of consciousness are common.

Efficacy of crizotinib for 28 cases of advanced ALK-positive non-small cell lung cancer / 中华肿瘤杂志

<p><b>OBJECTIVE</b>This study aims to evaluate the efficacy and safety of crizotinib for advanced ALK-positive non-small cell lung cancer (NSCLC) patients.</p><p><b>METHODS</b>Twenty-eight patients with advanced ALK-positive NSCLC were given orally crizotinib 250 mg b. i.d., and were followed up to evaluate the therapeutic efficacy and safety.</p><p><b>RESULTS</b>Among the 28 patients, the objective response rate (ORR) was 71.4% (20/28) and disease control rate (DCR) was 92.9% (26/28). Three patients achieved complete response. Seventeen patients had partial response. The most common drug-related adverse events were mild flickering vision and gastrointestinal reaction. Eleven patients experienced flickering vision. Nine patients had nausea and vomiting. Eight patients had diarrhea. They were all reversible and of grade I or II. Only one patient had grade III myelosuppression. Among the 28 patients, 16 cases were disease-free and 12 cases had progressive disease, with a progression-free survival of 8.2 months.</p><p><b>CONCLUSIONS</b>Crizotinib is effective and tolerable in the treatment of advanced ALK-positive NSLCC. However, its long-term treatment efficacy requires to be further studied.</p>

In vitro interaction of deferiprone with cellular membrane transporters of hOCTs and hOAT1 / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To develop a LC-MS/MS method for determination of deferiprone in cell lysate and to study the potential interaction between deferiprone and hOCTs or hOAT1 transporters in vitro.</p><p><b>METHODS</b>The determination was performed on an Agilent Eclipse Plus C18 column(3.5 μm, 2.1 mm×50 mm).The gradient mobile phase was composed of solvent A:0.1% formic acid in water, and B:0.1% formic acid in acetonitrile. The mass spectrometer with an electrospray interface was operated in positive ion mode with multiple reaction monitoring (MRM) scan mode monitored the ion pair of deferiprone at m/z 140→96, or phenacetin at m/z 180→110. The effects of deferiprone on the accumulation of typical substrates of hOCTs and hOAT1 were evaluated by MDCK-hOCTs and MDCK-hOAT1 cells respectively. The accumulation of deferiprone was also investigated in MDCK-hOCTs cells and mock cells with or without typical inhibitors.</p><p><b>RESULTS</b>The standard curve was linear over the range of 5-300 nmol/L. The assay recovery of deferiprone was above 94%, and the intra-day precision (RSD) was less than 2.0%. The accumulation of MPP(+) in MDCK-hOCTs cells with 300 μmol/L deferiprone were 73.5%, 87.1% and 70.4%, respectively. The uptake of deferiprone in MDCK-hOCTs and mock cells did not show significant difference. Deferiprone of 100 μmol/L did not significantly affect the accumulation of 6-CF in MDCK-hOAT1 cell.</p><p><b>CONCLUSION</b>The method is sensitivity and suitable for the determination of deferiprone in cell lysate. Deferiprone can significantly inhibit hOCT1 and hOCT3, but has no effects on hOCT2 and hOAT1. hOCTs may not play a major role in the transport of deferiprone.</p>

Role of GDNF in the behavior and cognitive impairment of mice induced by chronic stress and aging / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To investigate the effects of chronic stress on the spatial learning-memory and the role of glial cell line-derived neurotrophic factor (GDNF) of prefrontal cortex (PFC) and hippocampus (HP) in different age mice.</p><p><b>METHODS</b>The chronic stress model mice in 21 days with multiple chronic unpredictable stressors were applied. The spontaneous behavior and spatial learning-memory ability of mice were tested, using Open field and Morris water maze task, and the expression of GDNF in HP and PFC were detected by immunohistochemical method.</p><p><b>RESULTS</b>Compared with young mice, the spontaneous behaviors were significantly decreased and the spatial learning-memory function were significantly decreased (P < 0.05, P < 0.01) in aged mice. The GDNF expression in the CA3, DG of HP and PFC were significantly reduced in aged mice (P < 0.05, P < 0.01). After chronic stress, the spontaneous behaviors were remarkably decreased and the ability of spatial learning-memory of the stress group mice were significantly decreased (P < 0.05, P < 0.01) compared with those of the control group mice. The expression of GDNF in HP and PFC were remarkably reduced (P < 0.05, P < 0.01) in stress group mice. The aged stress mice had more serious changes after chronic stress.</p><p><b>CONCLUSION</b>The brain aging and chronic stress in mice causes behavioral changes and the damage of spatial learning-memory function, and which may be nearly related to the expression of GDNF in HP and PFC.</p>

Efficacy and safety of pemetrexed or gemcitabine combined with carboplatin as the first-line therapy in elderly patients with advanced non-small cell lung cancer / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To observe the clinical efficacy and safety of pemetrexed or gemcitabine combined with carboplatin as the first-line therapy in elderly patients with advanced non-small cell lung cancer (NSCLC).</p><p><b>METHODS</b>Seventy patients aged 70 years or over with stage IIIb-IV NSCLC were equally and randomly divided into pemetrexed plus cisplatin group (PC) and gemcitabine plus carboplatin group (GC). Patients in the PC group received pemetrexed (PEM) 500 mg/m(2) on day 1, and carboplatin (CBP) AUC5 on day 1 for 21-day cycle. Patients in the GC group received gemcitabine 1000 mg/m(2) on days 1 and 8, CBP AUC5 on day 1 for a 21-day cycle.</p><p><b>RESULTS</b>In the PC and GC groups, CR 0 and 0, PR 10 and 8, response rates 28.6% and 22.9% were observed, respectively. There was no statistically significant difference between the two groups (χ(2) = 0.299, P = 0.584). The 1-year and 2-year survival rates of the PC and GC groups were 48.6% vs. 45.7% and 11.4% vs. 11.4%, respectively, with a median survival of 11.00 and 10.00 months, without a statistically significant difference between the two groups (χ(2) = 0.01, P = 0.919). Regarding toxicities, the incidences of neutropenia/thrombocytopenia, nausea and vomiting (grade III ∼ IV) in the GC group were significantly higher than those in the PC group (P < 0.05). According to the observer scale of lung cancer symptoms, the post-treatment scores improved in both the two groups, and with no significant difference between them (P > 0.05).</p><p><b>CONCLUSIONS</b>PC and GC show similar efficacy for elderly NSCLC patients, however, the toxicities in PC patients are lower than those in GC patients. Thus, pemetrexed combined with carboplatin is an effective chemotherapeutic regimen for advanced NSCLC in elderly patients.</p>

Anticancer effect of triptolide-polyethylenimine-cyclodextrin in vitro / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To develop a drug delivery system triptolide-polyethylenimine-cyclodextrin and to evaluate its anticancer activity in vitro.</p><p><b>METHODS</b>Triptolide was conjugated to polyethylenimine-cyclodextrin by N, N'-carbonyldiimidazole to form triptolide-polyethylenimine-cyclodextrin. (1)H-NMR, FT-IR and XRD were used to confirm its structure. The anticancer effect of the polymer was assessed by MTT assay, erasion trace test and hematoxylin-eosin staining. The potential to condense siRNA and to delivery siRNA into cytoplasm was demonstrated by gel retardation assay, zeta-potential determination and fluorescence staining.</p><p><b>RESULTS</b>Triptolide was successfully conjugated to polyethylenimine-cyclodextrin and the conjugation rate of triptolide was 10% (w/w). siRNA was effectively condensed by the polymer at the N/P ratio of 5, and its particle size was 300 ±15 nm and zeta potential was 8 ±2.5 mV. MTT assay, erasion trace test and hematoxylin-eosin staining revealed that triptolide-polyethylenimine-cyclodextrin had anticancer effect and low cytotoxicity to normal cells. The polymer was able to deliver siRNA to the cytoplasm effectively as demonstrated by fluorescence staining.</p><p><b>CONCLUSION</b>Triptolide-polyethylenimine-cyclodextrin is able to inhibit the growth and migration of cancer cells in vitro and to carry siRNA into cells effectively. It is potential to be used as a novel prodrug for co-delivery of gene and drug in cancer treatment.</p>

Characteristics of cationic polymers PEI-CyD, PEI-PHPA, PEE-PHPA and PEI25kD in vitro and in vivo / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To study the characteristics of cationic polymers polyethylenimine-β-cyclodextrin (PEI-CyD), polyethylenimine-poly-(3-hydroxypropyl)-aspartamide (PEI-PHPA), N,N-Dimethyldipropylenetriamine-Bis(3-aminopropyl)amine-aspartamide (PEE-PHPA) in vitro and in vivo.</p><p><b>METHODS</b>PEI-PHPA, PEI-CyD and PEE-PHPA were synthesized and the chemistry structure of PEI-PHPA, PEI-CyD and PEE-PHPA was confirmed by (1)H-NMR. The particle size and zeta potential of these polymers were measured, and capacity of plasmid DNA condensation was tested. The inhibition of COS-7, A549, HEK293 and C6 cells was measured by MTT assay. The transfection efficiency was determined in HEK293 cell lines. The toxicity, tissue distribution and transfection efficiency of cationic polymers were tested in vivo.</p><p><b>RESULTS</b>When the N/P of polymers/DNA at 30, the particle sizes were close 250 nm and the zeta-potential were near 35 mv. They were able to condense DNA at N/P ratio < 5. The MTT assay showed that the IC(50) of PEE-PHPA was 21.5, 20.2, 7.30 and 37.1 μg/ml, and that of PEI25kD was 15.8, 18.3, 11.4 and 36.7 μg/ml in C6, COS-7, A549 and HEK293cell lines, respectively. The cell viability of PEI-CyD and PEI-PHPA in above cell lines was over 60%. They had high transfection efficiency in HEK293 cell lines. The LD(50) of PEI25Kd, PEI-CyD, PEI-PHPA and PEE-PHPA in vivo was 19.50, 100.4, 521.2 and 630.0, respectively by intraperitoneal (ip) injection. The contractions of these polymers were higher in kidney than in other organs and tissues.PEE-PHPA had slight effect on kidney and liver function.</p><p><b>CONCLUSION</b>PEE and PEI25kD have higher transfection efficiency and higher toxicity; while PC and PHPA-PEI have lower toxicity and higher transfection efficiency to be used as non-viral gene vector.</p>

Clinical observation of bone graft and impaction on posterior interbody fusion for lumbar instability / 中国骨伤

<p><b>OBJECTIVE</b>To investigate the clinical effect and indication of bone graft and impaction on posterior interbody fusion for lumbar instability.</p><p><b>METHODS</b>From January 2001 to July 2008, 95 patients with lumbar instability were treated by bone graft and impaction on posterior interbody fusion. Including 41 males and 54 females, the age from 45 to 76 years old with an average of 59 years. There were 68 cases with single level, 22 cases with two-level, 5 cases with three-level in patients, which were 127 intervertebral space altogether. The neural canal and affected side nerve root were decompressed thoroughly during operation. Resected the disc from the affected side and erased the cartilage to plate extensively combined with pedicle screw fixation, and impaction on interbody fusion with the excisional vertebral plate bone was achieved. To assess the improvement of the patients' symptom, sign, and JOA scores pre and post operatively. Meanwhile, the changes of intervertebral height from the lumbar radiographs were measured and the degrees of interbody bone fusion were evaluated according to SUK method.</p><p><b>RESULTS</b>All the 95 patients were followed up from 12 to 90 months with the mean of 44.8 months. All the clinical symptom were improved significantly or disappeared completely. All the 127 intervertebral space achieved good bone fusion. There was no displacement of bone graft and severe complication happened. According to the radiograph, all the intervertebral heights were increased obviously. The mean JOA score improved from 11.3 +/- 3.3 preoperative to 25.1 +/- 2.8 at 8 weeks postoperative; achieved 24.8 +/- 3.2 with followed up at the last time (P < 0.001).</p><p><b>CONCLUSION</b>Bone graft and impaction on posterior interbody fusion was one of the most effective methods for the lumbar instability. It has extensive range of application, and it's suitable for senile lumbar degeneration instability especially.</p>

Comparison of MRI manifestations and histopathologic findings in pancreatic head carcinoma in vivo ex vivo / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To prospectively analyze the correlation of MRI image characteristics with histopathological findings in pancreatic head carcinoma in vivo and ex vivo.</p><p><b>METHODS</b>Sixteen patients with pancreatic head carcinoma were examined by 1.5T MRI. MR sequences included pre-and post-contrast dynamic 2D FLASH T1WI, TSE T2WI + fat suppressed (FS). All fresh specimens were scanned again within an hour after resection during the Whipple procedure, and were then cut into slices along the direction of MRI scan. The MRI image characteristics were compared with gross and histopathologic findings of the specimens.</p><p><b>RESULTS</b>The tumor size ranged from 1.5 cm x 2.0 cm to 4.8 cm x 4.2 cm with a mean value of 3.6 cm x 3.1 cm. The MRI findings in vivo showed hypointensity in 14 lesions and isointensity in 2, and on 2D FLASH T1WI and TSE T2WI, all lesions displayed mixed intensity except 3 lesions with iso-intensity. During post-contrast dynamic pancreatic parenchymal phase, 15 lesions showed mild enhancement and 11 lesions had ring enhancement sign. Nine lesions displayed progressive irregular moderate enhancement during post-contrast dynamic hepatic phase. Four lesions showed enhancement with iso- and hyperintensity in post-contrast dynamic delayed phase. The MRI findings demonstrated that all lesions ex vivo had hypointensity on 2D FLASH T1 WI and mixed intensity on TSE T2WI + FS. Tumor tissues mainly displayed hypointensity, and the area containing tumor and inflammatory tissue showed iso-intensity on 2D FLASH T1WI. On T2WI + FS, the fibrosis proportion displayed hypo or isointensity, while the tumor and chronic inflammatory tissue demonstrated slight hyperintensity, and the zones of mucous degeneration or pancreatic ductal dilatation displayed hyper-intensity. The ring enhancement of tumor was caused by multiple factors and no obvious enhancement within tumor and fibrosis area were observed during post-contrast dynamic pancreatic parenchymal phase. Progressive irregular enhancement originated from desmoplastic reaction within the tumor during post-contrast dynamic hepatic phase and delayed phase, respectively.</p><p><b>CONCLUSION</b>Pancreatic head carcinomas contain various kinds of tissues. MRI can reveal these pathologic characteristics. No obvious hemorrhage and necrosis within the tumor were observed in this series.</p>

MRI in the evaluation of peripancreatic vessel invasion and resectability of pancreatic carcinoma / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To investigate the role of MRI in evaluating the peripancreatic vessel invasion and resectability of pancreatic carcinoma based on the comparison of MRI image with surgical exploration, and try to establish the criteria for assessment of the sensitivity, specificity and accuracy of resectability.</p><p><b>METHODS</b>Forty-one pancreatic carcinoma patients confirmed by pathology received preoperative plain and contrast enhanced MRI scan, and 37 of them had additional coronal MRA scan. Peripancreatic vessel invasion was preoperatively assessed based on MRI features, and the vessel invasion degree from the uninvolved to the severely involved was divided into 6 grades represented by 1, 2a, 2b, 3a, 3b and 4, respectively. Compared with the findings during the surgery, the sensitivity and specificity of each vessel invasion grade were studied and the receiver operator characteristic curve (ROC) was drawn. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of resectability evaluation based on 2 and 2a degree were calculated respectively. The resectability of involved arteries and veins of grade 2 were also analyzed.</p><p><b>RESULTS</b>Of the 41 patients, 22 had resectable tumor, with 20 curative resection and 2 palliative. Compared with the findings during surgery, seven vessels including three arteries and four veins were not correctly interpreted by MRI. If grade 1,2a,2b,3a and 3b was used as the resectable standard,respectively, the sensitivity to predict the unresectbility was 78.3%, 84.8%, 67.4%, 56.5% and 47.8%, respectively. Receiver operator characteristic curve demonstrated that grade 2a was the optimal critical point. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of grade 2a in predicting the unresectbility were 84.8%, 98.5%, 92.9%, 96.6% and 95.9%.</p><p><b>CONCLUSION</b>Our data showed that grade 2a (tumor involvement < 2 cm long and < 1/2 circumference of the vessel) may be more sensitive and accurate in predicting the resectability, which may be considered as the line of demarcation between the respectable and unresectable cases in clinical practice.</p>

CT diagnosis of intraductal papillary mucinous tumor of the pancreas / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To investigate the CT and MRI manifestatitions of intraductal papillary mucinous neoplasm (IPMN) of the pancreas.</p><p><b>METHODS</b>Both clinical and imaging data of 12 pathologically confirmed intraductal papillary mucinous neoplasm, of the pancreas were retrospectively analyzed.</p><p><b>RESULTS</b>The pancreatic IPMN can be classified into two types based on CT image: the branch duct IPMN (n=7) originated from the head and uncinate process of the pancreas. The tumor consisted of lobulated or clustered small cyst lesions with septa among them, the wall and septa can be enhanced; the combined IPMN (n=5) involved branch ducts of the uncinate process as well as the main pancreatic ducts with dilatation (diameter: 4-7 mm), one of these involved the branch ducts along the pancreatic body. The pancreatic IPMN was mainly found in elderly patient with a chief clinical symptoms of abdominal pain and/or pancreatitis.</p><p><b>CONCLUSION</b>The intraductal papillary mucinous neoplasm of the pancreas enjoys specific features in CT and MRI image, which are helpful to the diagnosis.</p>

Target-controlled infusion of remifentanil and propofol during operation with suspension laryngoscopy / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To evaluate target-controlled infusion (TCI) of remifentail-propofol and the balanced anesthesia of fentanyl-isoflurane during the operation with suspension laryngscope.</p><p><b>METHODS</b>Sixty ASA I-II patients scheduled for the surgery through suspension laryngoscopy were randomly divided into two groups: TCI group and control group. In TCI group, anesthesia was maintained with TCI remifentanil-propofol which was stopped at the end of operation. The target plasma concentration of remifentanil was set at 6 microg/L and propofol at 3 mg/L. In control group, anesthesia was induced with intravenous fentanl 2.5 microg/kg and propofol 1-2 mg/kg, maintained with fentanl 0.03 microg.kg(-1). min(-1) and 1% isoflurane which was stopped at the end of surgery. Intubation was facilitated with succinylcholine 1-1.5 mg/kg.MAP, HR, ECG, S(p)O(2) and P(ET)CO(2) were monitored during anesthesia. The following parameters were recorded and compared between two groups: (1) the changes in blood pressure (BP), heart rate(HR) and S(p)O(2) at different time point; (2) recovery profile including the time of response to verbal commands, autonomous breathing, tracheal extubation, orientation recovery, discharging from PACU after operation; (3) OAAS scores after operation; (4) postoperative complications; (5) unexpected events and awareness during operation.</p><p><b>RESULT</b>(1) The hemodynamics were stable while the target plasma concentration of remifentanil was set at 6 microg/L and propofol at 3 mg/L. (2) During tracheal intubation, suspension laryngoscope was inserted, and extubation MAP was significantly lower in TCI group than that in control group; (3) There were no significant differences in hemodynamic values and S(p)O(2) of different time points between two groups. Study group was faster than control group on recovery profile including the time of response to verbal commands, autonomous breathing, tracheal extubation, orientation recovery and discharging from PACU. There was respectively one unexpected event in both groups.</p><p><b>CONCLUSION</b>Remifentanil supplemented with isoflurane anesthesia can achieve the optimal hemodynamic stability during the operation with suspension laryngoscopy and better recovery profile from anesthesia than fentanyl.</p>

Imaging Diagnosis of Aggressive Angiomyxoma / 实用放射学杂志

Objective To investigate the imaging features of aggressive angiomyxoma.Methods CT findings in 3 patients and MRI finding among one of them with pathologically proved aggressive angiomyxoma were retrospectively analyzed and the relevant literature were reviewed.Results In all the 3 cases,CT and MR imaging demonstrated a well defined mass arising from the pelvis,perineum or vulva.The tumours displaced but did not invade adjacent structures of the pelvic.In 2 cases,there was marked enhancement following injecting contrast materials or T_2WI with internal swirling pattern.Recurrent tumour in one case was of similar imaging features to the primary lesion.The small cystiform area could be seen inside the lesion in one case.Conclusion Aggressive angiomyxoma carries certain characteristics in CT and MRI manifestations.MRI is more excellent than CT in delineating the site,shape and the extent of these lesions.

Pulmonary Sclerosing Hemangioma: CT Finding-Pathologic Correlation:A Report of 21 Cases / 实用放射学杂志

Objective To study the CT features of pulmonary sclerosing hemangioma(PSH),so that to improve the imaging diagnostic abilities.Methods 21 cases pathologically proven PSH were included in this retrospective article. Imaging features were compared with pathological results.Results (1)The disease mainly occurred in female patients between 30～50 years old; (2)On CT, the lesion presented as well-defined, round and oval shaped mass or nodule;(3) A homogeneous soft-tissue mass on unenhanced CT; calcification was found in some lesions; in 2 cases, cystic-like area was found within large tumors(≥5cm); (4)Homogeneous or heterogeneous enhancement after contrast administration; on delayed phase scans, some of them demonstrated late enhancement;(5)The seemingly characteristic air-trapping zone, vessels at its periphery and a tail sign were found in 4, 5, 7 cases respectively. Conclusion PSH should be considered in young and middle-aged female patients, with the characteristic presence of air-trapping zone, vessels at its periphery and a tail sign within images (especially on CT). And the disease can be preoperatively diagnosed combined with the clinical features with above the aforementioned features.