Objective To describe the interpositional omentum and demonstrate its clinical significance.MethodsCT and clinical data of the cases whose suprahepatic gaps widen were reviewed and the contrast of CT was adjusted to observe further.ResultsIn 1 916 cases with upper abdominal CT data,suprahepatic gap was widen in all 152 cases,and 119 cases showed fat density(6.21％ ).There were 3 cases of trauma and 3 cases of acute abdomen in the 119 cases CT in the 119 cases displayed free gas under diaphragma,but displayed fat density after contrast adjusted.There were 11 cases undergoing operations,1 for sigmoid rupture 4 liver cirrhosis and portal hypertension,3 gastric cancer,and 1 acute cholecystitis,1 bile duct carcinoma and Ⅰ case congenital cystic dilatation of common bile duct.The other 108 cases did not undergo surgical operation.ConclusionsInterpositional omentum is a clinical phenomenon that the omentum was shift in suprahepatic gap covering the liver surface.It is not rarely,the incidence rate being 6.21％ ( 119/1 916) in our study.The occurrence mechanism may be similar to that of Chilaiditi syndrome.It is difficult to differentiate interpositional omentum from free gas under diaphragms on CT plain scan picture,but it is easy after contrast adjusted of CT.Free gas under diaphragma should not be identify incorrecdied and patients should not undergo unnecessary surgical procedure.

Objective To compare the metabolic measures on prefrontal lobe and thalamus among schizophrenics with or without mental disorder family history by proton magnetic resonance spectroscopy (1 H-MRS),and to explore the relationship among metabolic measures,clinical symptom,and executive functioning.Methods Thirty-one schizophrenics with schizophrenia family history,21 schizophrenics with the other mental disorder family history,and 78 schizophrenics without mental disorder family history were examined at prefrontal lobe and thalamus by multi-voxel 1H-MRS.The N-acetylaspartate (NAA),Choline-congtaining compounds (Cho),and Creatine compounds (Cr) were measured and the ratios of NAA/Cr and Cho/Cr were determined.Meanwhile,Positive and Negative Syndrome Scale (PANSS) and Wisconsin Card Sorting Test (WCST) were also assessed in all schizophrenics.Results Both in schizophrenics with schizophrenia family history and with the other mental disorder family history,the NAA/Cr ratios showed lower than those in schizophrenics without mental disorder family history both on left prefrontal lobe and on fight thalamus ( P ＜ 0.05 ).Compared with schizophrenics without mental disorder family history,the score of negative symptoms and the perseverative errors demonstrated higher ( P＜ 0.05 or 0.01 ),the categories completed showed lower both in schizophrenics with schizophrenia family history and with the other mental disorder family history ( P＜0.05 ).The NAA/Cr ratios on left prefrontal lobe in all schizophrenics were significantly negatively related with the total score of PANSS and the responses errors (P ＜ 0.05 or P＜ 0.01 ),and positively related with the categories completed and the conceptual level responses ( P＜ 0.05 or P＜ 0.01 ).On left prefrontal lobe both in schizophrenics with schizophrenia family history and with the other mental disorder family history,the ratios of NAA/Cr were negatively related with the score of negative symptoms and the perseverative errors ( P ＜ 0.05 or 0.01 ).Conclusion The damages of neurons on prefrontal lobe and thalamus in schizophrenics with mental disorder family history may be more severe than those in schizophrenics without family history,and the damages on prefrontal lobe are related with negative symptoms and executive functioning.

Humans ; Aripiprazole/therapeutic use* ; Schizophrenia/drug therapy* ; Antipsychotic Agents/therapeutic use* ; Risperidone ; China ; Treatment Outcome