The Clinical Study Of Patients With Mass Lesions In Posterior Fossa And The Factors Analysis For Postoperative Complications

ObjectiveTo investigate the epidemiological characteristics of the patients with mass lesions in posterior fossa and analyze the factors for postoperative complications of these patients.MethodsA retrospective analysis in June 2012 to June 2012 the first affiliated hospital of Zhengzhou university neurosurgery in patients undergoing posterior fossa surgery occupied,according to the form of design registration patients' gender,age,pathological type,tumor diameter,tumor cutting rate,intraoperative observation whether infringement or adhesion nerves and blood vessels,operation time,blood loss,postoperative complications,type,and so on and so forth.Single factor analysis and multifactor analysis were used to analyze the complications related to postoperative complications.The age,sex,location and other epidemiological characteristics of patients with posterior fossa were statistically analyzed.Results883 cases were collected and 454 cases were postoperatively.The incidence was 51.4%.Single factor analysis showed that age(20,21 to 40 years old or less,41-60 years old,> 60 years),a placeholder position(cerebellopontine Angle,the petroclival area,and four ventricle),tumor diameter(<3 cm,3-5 cm,>5 cm),the complete rate(full cut,cut,cut part or all biopsy),operation time(<4 hours,4 to 6 hours,>6 hours),infringement or adhesion nerves and vessels,intraoperative neural electrophysiological monitoring 13 factors has statistical significance.Multiariable Logistic regression analysis showed that 41-60 years old,>60 years old,cerebellopontine Angle,the petroclival area,four ventricles,part cut OR biopsy,surgical time >6 hours,invasion OR adhesion of nerve and vascular factors OR>1,P <0.05,for posterior fossa placeholder independent risk factors for postoperative complications,intraoperative neural electrophysiological monitoring OR <1,P<0.05,for posterior fossa placeholder independent protective factors of postoperative complications.90.0% of mass lesions in posterior fossa were neoplastic lesions and 10.0% of them were non-neoplastic lesions,the most common pathological type was schwannoma,and the ratio of males and females was 1:1.36,and the highest age group was 41-60 years old.Conclusion>60 years old,41-60 years old,cerebellopontine angle,the petroclival area,four ventricles,part cut or biopsy,surgical time >6 hours,invasion or adhesion nerve and vascular factors are independent risk factors for posterior fossa placeholder postoperative complications,intraoperative neural electrophysiological monitoring is posterior fossa placeholder independent protective factors of postoperative complications.90% of mass lesions in posterior fossa were neoplastic diseases and the most common pathological type was schwannoma,the ratio of males and females was 1:1.36,and the highest age group was 41-60 years old.