AIM: To investigate the diffusion changes in both the optic nerve and optic tract in orbital space-occupying lesion patients with decreased visual acuity, and its clinical significance using probabilistic diffusion tr...AIM: To investigate the diffusion changes in both the optic nerve and optic tract in orbital space-occupying lesion patients with decreased visual acuity, and its clinical significance using probabilistic diffusion tractography(PDT). METHODS: Twenty patients with orbital space-occupying lesions and 25 age-and gender-matched healthy persons were included. All patients and controls underwent routine orbital magnetic resonance imaging and diffusion tensor imaging(DTI), using a 3.0 T magnetic resonance scanner(Trio Tim Siemens). After the image data were preprocessed, each DTI parameters of the optic nerve and optic tract was obtained by PDT, including fractional anisotropy(FA), mean diffusivity(MD), axial diffusivity(AD) and radial diffusivity(RD). The asymmetry index(AI) of each parameter was calculated. Compared the parameters of the affected side optic nerve and ipsilateral optic tract with the contralateral side by paired sample t-test;compared AI of parameters of optic nerve and optic tract between the patient group and the control group by independent sample t-test. Patients were divided into threesubgroups according to the low vision grade standard of WHO, compared the FA and AI of FA between the three subgroups by single factor variance analysis. RESULTS: The affected side optic nerve presented significantly decreased FA, increased MD, AD, and RD values compared to the unaffected side(P<0.05). The AI of FA, MD, AD, and RD of optic nerve in the patients was significantly higher than that of the controls(P<0.05). The comparison results of the optic tract showed that there was no significant difference between the patient group and control group in terms of the bilateral optic tracts in patients(P>0.05). The AIs of the FA value of the optic nerve in the eyesight <0.1 subgroup was significantly higher than that in the other groups(P<0.05). CONCLUSION: FA, MD, AD, and RD of the affected side optic nerve of the orbital space-occupying lesions have significantly changed, the FA value is the most sensitive. The PDT could be a useful tool to provide valid quantitative markers of optic nerve injuries and evaluate the severity of orbital diseases, which other examinations cannot be acquired.展开更多
Objective：To analyze the clinical features,histopathologic classification and frequencies of various types of recurrent orbital space-occupying lesions.Methods：A retrospective study was carried out in 253 consecutiv...Objective：To analyze the clinical features,histopathologic classification and frequencies of various types of recurrent orbital space-occupying lesions.Methods：A retrospective study was carried out in 253 consecutive patients with recurrent orbital spaceoccupying lesions treated by surgical excision in the Institute of Orbital Diseases,the General Hospital of the Armed Police Force from January 2009 to December 2010.Results：The patients included 123 males and 130 females aged 2 to 78 years（mean,36.2 years）,and the last recurrence interval after operation ranged from 1 month to 40 years（median,4.75 years）.Of all the cases,159（62.8%）,65（25.7%）,20（7.9%）,8（3.2%） and 1（0.4%） had previously experienced once,twice,three,four and six times of surgeries,respectively.Among them,29（11.5%） cases had recurred 3 times or over,and 37（14.6%） cases got recurrence in 10 or more years postoperatively.Most of the patients with local recurrence presented with various clinical manifestations,while 31（12.3%） cases were symptom-free.Two hundred and thirty-one（91.3%） cases underwent surgical removal of the recurrent orbital lesions,and another 22（8.7%） cases had to receive the exenteration of orbit.Categories of these recurrent orbital lesions after operation were as follows：lacrimal gland tumors,65（25.7%） cases;vasogenic diseases,54（21.3%） cases;neurogenic tumors,42（16.6%） cases;secondary tumors,24（9.5%） cases;orbital inflammation,21（8.3%） cases;myogenic tumors,14（5.5%） cases;fibrous and adipose tumors,12（4.7%） cases;lympho-hematopoietic tumors,7（2.8%） cases;bone or cartilage tumors,7（2.8%） cases;orbital cysts,6（2.4%） cases;and indefinitely differentiated tumor,1（0.4%） case.The 10 top histopathologic diagnoses were lacrimal gland pleomorphic adenoma,hemangiolymphangioma,lacrimal gland adenoid cystic carcinoma,meningioma,inflammatory pseudotumor,neurofibroma,sebaceous gland carcinoma,vascular malformation,rhabdomyosarcoma and hemangioma.Conclusions：The variety of recurrent orbital lesions after operation includes mainly of tumors except for vascular malformation and orbital inflammatory lesions.The lacrimal gland epithelial tumor is most prone to relapse after resection,and early and longer-term postoperative follow-up is needed.展开更多
目的探讨超声造影(CEUS)诊断肝脏占位性病变良恶性的效能。方法2020年1月~2023年1月收治的97例肝脏占位性病变患者,接受肝穿刺活检及彩色多普勒超声和CEUS检查,采用Tom Tec Sono Liver CAP软件分析CEUS数据,采用受试者工作曲线(ROC)分...目的探讨超声造影(CEUS)诊断肝脏占位性病变良恶性的效能。方法2020年1月~2023年1月收治的97例肝脏占位性病变患者,接受肝穿刺活检及彩色多普勒超声和CEUS检查,采用Tom Tec Sono Liver CAP软件分析CEUS数据,采用受试者工作曲线(ROC)分析超声诊断肝脏占位性病变良恶性的效能。结果经病理学检查,在97肝脏占位性病变患者中,诊断恶性病变41例(胆管细胞癌5例、转移性肝癌10例、肝细胞癌26例)和良性病变56例(局灶性结节性增生29例和炎性假瘤27例);恶性病变动脉期局部血流量为(63.9±12.1)mL/min,显著大于良性病变【(42.7±8.9)mL/min,P<0.05】,延迟期局部血流量为(17.6±2.4)mL/min,显著小于良性病变【(19.0±2.7)mL/min,P<0.05】;恶性病变始峰时间、达峰时间、上升时间和通过时间分别为(11.5±2.1)s、(34.1±6.9)s、(25.8±4.3)s和(110.5±20.7)s,显著短于良性病变【分别为(14.1±2.3)s、(45.9±6.2)s、(37.6±5.8)s和(149.3±24.1)s,P<0.05】,而灌注指数显著大于良性病变【(141.2±20.0)对(89.7±18.9),P<0.05】;二维超声诊断良恶性肝脏局灶性病变的灵敏度为82.9%,特异度为78.4%,准确度为78.4%,阳性预测值为70.8%,阴性预测值为85.7%,而CEUS诊断良恶性肝脏局灶性病变的灵敏度为80.5%,特异度为82.1%,准确度为81.4%,阳性预测值为76.7%,阴性预测值为85.2%。结论CEUS诊断肝脏占位性病变良恶性具有较高的应用价值,可协助临床决策。展开更多
基金Supported by the National Natural Science Foundation of China (No.81471649)Beijing Municipal Science and Technology Commission (No. Z171100000117001)
文摘AIM: To investigate the diffusion changes in both the optic nerve and optic tract in orbital space-occupying lesion patients with decreased visual acuity, and its clinical significance using probabilistic diffusion tractography(PDT). METHODS: Twenty patients with orbital space-occupying lesions and 25 age-and gender-matched healthy persons were included. All patients and controls underwent routine orbital magnetic resonance imaging and diffusion tensor imaging(DTI), using a 3.0 T magnetic resonance scanner(Trio Tim Siemens). After the image data were preprocessed, each DTI parameters of the optic nerve and optic tract was obtained by PDT, including fractional anisotropy(FA), mean diffusivity(MD), axial diffusivity(AD) and radial diffusivity(RD). The asymmetry index(AI) of each parameter was calculated. Compared the parameters of the affected side optic nerve and ipsilateral optic tract with the contralateral side by paired sample t-test;compared AI of parameters of optic nerve and optic tract between the patient group and the control group by independent sample t-test. Patients were divided into threesubgroups according to the low vision grade standard of WHO, compared the FA and AI of FA between the three subgroups by single factor variance analysis. RESULTS: The affected side optic nerve presented significantly decreased FA, increased MD, AD, and RD values compared to the unaffected side(P<0.05). The AI of FA, MD, AD, and RD of optic nerve in the patients was significantly higher than that of the controls(P<0.05). The comparison results of the optic tract showed that there was no significant difference between the patient group and control group in terms of the bilateral optic tracts in patients(P>0.05). The AIs of the FA value of the optic nerve in the eyesight <0.1 subgroup was significantly higher than that in the other groups(P<0.05). CONCLUSION: FA, MD, AD, and RD of the affected side optic nerve of the orbital space-occupying lesions have significantly changed, the FA value is the most sensitive. The PDT could be a useful tool to provide valid quantitative markers of optic nerve injuries and evaluate the severity of orbital diseases, which other examinations cannot be acquired.
文摘Objective：To analyze the clinical features,histopathologic classification and frequencies of various types of recurrent orbital space-occupying lesions.Methods：A retrospective study was carried out in 253 consecutive patients with recurrent orbital spaceoccupying lesions treated by surgical excision in the Institute of Orbital Diseases,the General Hospital of the Armed Police Force from January 2009 to December 2010.Results：The patients included 123 males and 130 females aged 2 to 78 years（mean,36.2 years）,and the last recurrence interval after operation ranged from 1 month to 40 years（median,4.75 years）.Of all the cases,159（62.8%）,65（25.7%）,20（7.9%）,8（3.2%） and 1（0.4%） had previously experienced once,twice,three,four and six times of surgeries,respectively.Among them,29（11.5%） cases had recurred 3 times or over,and 37（14.6%） cases got recurrence in 10 or more years postoperatively.Most of the patients with local recurrence presented with various clinical manifestations,while 31（12.3%） cases were symptom-free.Two hundred and thirty-one（91.3%） cases underwent surgical removal of the recurrent orbital lesions,and another 22（8.7%） cases had to receive the exenteration of orbit.Categories of these recurrent orbital lesions after operation were as follows：lacrimal gland tumors,65（25.7%） cases;vasogenic diseases,54（21.3%） cases;neurogenic tumors,42（16.6%） cases;secondary tumors,24（9.5%） cases;orbital inflammation,21（8.3%） cases;myogenic tumors,14（5.5%） cases;fibrous and adipose tumors,12（4.7%） cases;lympho-hematopoietic tumors,7（2.8%） cases;bone or cartilage tumors,7（2.8%） cases;orbital cysts,6（2.4%） cases;and indefinitely differentiated tumor,1（0.4%） case.The 10 top histopathologic diagnoses were lacrimal gland pleomorphic adenoma,hemangiolymphangioma,lacrimal gland adenoid cystic carcinoma,meningioma,inflammatory pseudotumor,neurofibroma,sebaceous gland carcinoma,vascular malformation,rhabdomyosarcoma and hemangioma.Conclusions：The variety of recurrent orbital lesions after operation includes mainly of tumors except for vascular malformation and orbital inflammatory lesions.The lacrimal gland epithelial tumor is most prone to relapse after resection,and early and longer-term postoperative follow-up is needed.
文摘目的探讨超声造影(CEUS)诊断肝脏占位性病变良恶性的效能。方法2020年1月~2023年1月收治的97例肝脏占位性病变患者,接受肝穿刺活检及彩色多普勒超声和CEUS检查,采用Tom Tec Sono Liver CAP软件分析CEUS数据,采用受试者工作曲线(ROC)分析超声诊断肝脏占位性病变良恶性的效能。结果经病理学检查,在97肝脏占位性病变患者中,诊断恶性病变41例(胆管细胞癌5例、转移性肝癌10例、肝细胞癌26例)和良性病变56例(局灶性结节性增生29例和炎性假瘤27例);恶性病变动脉期局部血流量为(63.9±12.1)mL/min,显著大于良性病变【(42.7±8.9)mL/min,P<0.05】,延迟期局部血流量为(17.6±2.4)mL/min,显著小于良性病变【(19.0±2.7)mL/min,P<0.05】;恶性病变始峰时间、达峰时间、上升时间和通过时间分别为(11.5±2.1)s、(34.1±6.9)s、(25.8±4.3)s和(110.5±20.7)s,显著短于良性病变【分别为(14.1±2.3)s、(45.9±6.2)s、(37.6±5.8)s和(149.3±24.1)s,P<0.05】,而灌注指数显著大于良性病变【(141.2±20.0)对(89.7±18.9),P<0.05】;二维超声诊断良恶性肝脏局灶性病变的灵敏度为82.9%,特异度为78.4%,准确度为78.4%,阳性预测值为70.8%,阴性预测值为85.7%,而CEUS诊断良恶性肝脏局灶性病变的灵敏度为80.5%,特异度为82.1%,准确度为81.4%,阳性预测值为76.7%,阴性预测值为85.2%。结论CEUS诊断肝脏占位性病变良恶性具有较高的应用价值,可协助临床决策。
