ABSTRACT
Objective To investigate the correlation between lumbar curvature and lumbar intervertebral disc herniation.Methods 160 cases of young and mid-aged lumbar disc herniation patients were collected.All patients were divided into two groups accord-ing to the curvature.The age,sex,course of disease,occupation and MRI manifestations were recorded.Also,the recurrence and the arch top distance were recorded in 6 months after treatment.Results The age,sex,course of disease were similar between the two groups.70% of the patients in curvature straighten group were sitting or standing for long time in life,while in the other group more people were engaged in traditional manual work(P<0.05).The arch top distance increased in the curvature straighten group when rechecked(P<0.05).There were more patients with L4/L5 segment intervertebral disc herniation in the curvature straighten group,while more patients with L5/S1 segment intervertebral disc herniation in the other group(P<0.001).The recurrence rate was higher in the curvature straighten group,and the arch top distance was less in the patients with recurrence in both groups(P<0.05).Conclusion The patients with curvature straightening have a higher rate of recurrence and intervertebral disc herniation in L4/L5 segment.The recovery and reconstruction of the balance of the lumbar spine biomechanics is beneficial to the patients’cura-tive effect and functional recovery.
ABSTRACT
Objective To evaluate CT and MRI findings of portal vein aneurysm(PVA)in order to improve its diagnostic accuracy.Methods CT and MRI findings of 9 patients with PVA proved by pathology and direct angiography were reviewed retrospectively.CT scanning was performed in 7 patients,including plain scan (n=2),both plain and enhanced scan (n=5),CT angiography (CTA)(n=3).Plain and enhanced MRI scan were performed in 3 patients.Results (1 )PVA showed a high predilection for old adults.(2 )Of the 9 tumors,4 located in portal vein trunk,2 located in junction of superior mesenteric vein and portal vein trunk,1 located in intrahepat-ic-extrahepatic portal vein,2 located in intra-hepatic portal vein.(3)8 tumors were characterized as well-defined and quasi-circular mass.1 patient occurred portal hypertension,thrombus as the portal vein trunk was oppressed by the tumor.(4)Plain CT showed the mass was slightly higher than pancreas parenchyma density,and uniform with the density of the liver parenchyma.Enhancement scanning showed 4 tumors represented mild or moderate enhancement in portal venous phase except for 1 patient accompany with portal vein thrombus.CTA showed clearly the relationship mass with portal vein,and classified the type of PVA .The 3 lesions represented hypo-intensity on T1 WI and even hyper-intensity on T2 WI.Enhancement scanning showed the tumor was significantly enhancement in portal venous phase on T1 WI.Conclusion CT and MRI have their own advantages in the diagnosis of portal vein aneurysm.Com-bination of CT and MRI could improve the diagnostic accuracy of portal vein aneurysm.