A new sonographic pattern of fetal hydrocephalus-midline-waved sign, and its mechanism were reported in this paper. When the abdominal wall of the pregnant woman was percussed by hand during ultrasound examination, the wave of midline echo was observed on sonoimage. The diagnosis of hydro-cephalus was made by this sign in all 12 fetuses, and confirmed by autopsy. No dilatation of the cerebral ventricle was observed in 5 out of 12 fetuses. It would be difficult to make the diagnosis of hy-drocephalus would previous diagnostic criteria be used. This sign is negative in normal fetuses, therefore-this finding has the practical value in the early and differential diagnoses of hydrocephalus.

BACKGROUND: Scholars have been trying to create a microenvironment similar to the human body, which can induce the directional differentiation of mesenchymal stem cells from human bone marrow, placenta and umbilical cord blood. OBJECTIVE: To compare the neuronal differentiation of human bone marrow mesenchymal stem cells, human placental mesenchymal stem cells and human umbilical cord blood mesenchymal stem cells induced by co-culture with nerve cells. METHODS: Human bone marrow mesenchymal stem cells, human placental mesenchymal stem cells and human umbilical cord blood mesenchymal stem cells cultured in vitro were co-cultured with nerve cells using the Transwell system. The morphological changes of three kinds of cells in the co-culture system were detected. After co-culture for4-5 days, immunofluorescence staining was used to measure the expression of neuron-specific enolase in cells. Mesenchymal stem cells only cultured in low glucose DMEM medium were used as controls. RESULTS AND CONCLUSION: These three kinds of mesenchymal stem cells were extended, and interconnected processes were detective. The positive expression of neuron-specific enolase was highest in the human umbilical cord blood mesenchymal stem cells followed by human placental mesenchymal stem cells and human bone marrow mesenchymal stem cells in order. In the control group, none of the three kinds of mesenchymal stem cells have neuronal morphology, and the expression of neuron specific enolase was negative for the immunofluorescence staining. To conclude, microenvironment provided by nerve cells can induce these three kinds of mesenchymal stem cells todifferentiate into neurons.

Objective Toinvestigatetheshort-termefficacyoftranscatheterarterialchemoembolization(TACE)combinedwith microwaveablation (MWA;TACE-MWA)inthetreatmentofmultinodularhepatocellularcarcinoma (HCC).Methods 58patients withmultinodularHCCtreatedintheinterventionalmedicinecenterfromJanuary2015toJanuary2017wereincludedingradeAor B.34cases(groupA)receivedTACEand24cases(groupB)underwentTACE-MWAtherapy.Theshort-termefficacywasevaluatedbyfollow-upandanalysisofthetimetoprogression (TTP),localrecurrencerate,newlesionrate,andpostoperativecomplicationsinboth groups.Results TheTTPinthetwogroupswas38-240 (106.2±63.1)daysand90-630 (328.5±178.8)daysrespectively.The incidenceofpostoperativecomplicationsintwogroupswas2.9% (1/34)and4.2% (1/24)respectivelyI.ngroupA,thelocalrecurrenceratewas 52.9% (18/34)andthenewfocusratewas76% (26/34);inthegroupB,thelocalrecurrenceratewas8.3% (2/24)andthenewfocusratewas 66.7% (16/24).Thedifferenceoflocalrecurrenceratebetweenthetwogroupswasstatisticallysignificant(P<0.05),whiletheincidenceofnew lesionwasnotsignificantlydifferent (P>0.05).Conclusion TACE-MWAissafeandeffectiveinthetreatmentofmultinodular HCC.ComparingwithtraditionalTACEtreatment,TACE-MWAcansignificantlyimprovedTTPandlocalcontrolrate.