The analysis of MRI findings and prognosis in meconium peritonitis prenatal / 实用放射学杂志

Objective To discuss the prenatal MRI features and the fetal outcomes of meconium peritonitis (MP).Methods The clinical data of 23 cases with MP were collected.The prenatal MRI features and fetal outcomes were analyzed retrospectively.Results Prenatal MRI features included meconium peritonitis pseudo-cyst (9/23,39.1%),fetal ascites (23/23,100.0%),bowel dilatation (9/23,39.1%), meconium leakage (3/23,13.0%),scrotal effusion (2/23,8.7%)and polyhydramnios (2/23,8.7%).Of the 23 fetuses,2 were induced and 2 1 were delivered.In 2 1 neonates,7 cases received surgical treatment,1 3 cases received conservative treatment and 1 case was dead due to treatment refusal of the family.Neonates with bowel dilatation and meconium leakage all underwent surgery,neonates with meconium peritonitis pseudo-cyst and fetal ascites underwent conservative treatment,and the rate of operation was 100%,100%,22.2% and 35.0%,respectively. Conclusion Prenatal MRI findings of MP are characteristic.Bowel dilatation,meconium leakage,growing meconium peritonitis pseudo-cyst and meconium peritonitis pseudo-cyst connectted with adjacent intestine are highly suggestive of early surgical intervention in neonate.

The MRI diagnosis of infant brachial plexus injury / 实用放射学杂志

Objective To evaluate the value of MRI in diagnosis of brachial plexus injury in infants.Methods MRI manifestations and electromyography(EMG) data of 14 cases were analyzed retrospectively.Kappa statistic was used to analyze the consistency between the two methods.Results Pure preganglionic injuries were found in 5 cases,preganglionic and postganglionic combined injuries occurred in 9 cases.MRI features of preganglionic injuries include:absence of roots in spinal canal (7 cases),nerve root enlargement (1 case),nerve sleeve dilation (3 cases),pseudomeningoceles (5 cases) and the dura thickening (3 cases).MRI features of postganglionic injuries include:trunk thickening with hyperintensity in STIR images(14 cases),adjacent structure disorder and edema (1 cases).The consistency of MRI and EMG was good (κ=0.752,P＜0.05).Conclusion MRI is an efficient method for demonstrating preganglionic and postganglionic injuries,and can provide reliable information for early diagnosis and treatment for brachial plexus injury in infants.