AIM To study the clinical features, imaging findings, treatment methods and results, and prognosis of supratentorial parenchymal ependymomas in children. MATERIAL AND METHODS Fourteen children with supratentorial parenchymal ependymomas were treated by the senior author at Tiantan Hospital between October 2004 and May 2010. The clinical manifestations, neuroimaging findings, treatment methods...

BACKGROUND Non-functioning pituitary adenomas (NFPA) invading into the cavernous sinus are surgically challenging. To decrease recurrence rate, surgeon makes a strong endeavor to resect tumor gross totally. However, gross total resection (GTR) is difficult to achieve with cavernous sinus invasion. Recently, a new classification system for cavernous invasion of pituitary adenomas was suggested. ...

BACKGROUND AND OBJECTIVES The primary goal of periodontal therapy is to restore the tooth supporting tissues lost due to periodontal disease. The aim of the present study was to compare the efficacy of combination of GTR membrane and alloplastc bone graft with open flap debridement (OFD) in treatment of periodontal intrabony defects. METHODS Twenty paired intrabony defects were surgically tre...

Abstract PURPOSE/OBJECTIVE Posterior fossa ependymoma group A (PF-EPN-A) is a poor prognostic subgroup, predominantly seen in infants and young children. Among all ependymomas, most of the recurrences are patients with PF-EPN-A subgroup. Despite advances neurosurgery postoperative adjuvant therapy, management these tumors remains challenging, recurrence occurs over 50% cases. In this study, we ...

Abstract In this paper, the second phase precipitation model is incorporated into finite element simulation system of hot rolling process through secondary development subprogram VUSDFLD ABAQUS, and analysis calculation nucleation rate, volume fraction size precipitates under different temperature fields strain are realized. The size, morphology distribution microalloyed carbonitride in Q690D s...

BACKGROUND Studies investigating the use of platelet-rich plasma (PRP) in the treatment of intrabony defects have yielded mixed results. The aim of our study was to evaluate the efficacy of PRP by comparing clinical attachment level (CAL) and pocket depth (PD) for patients who received PRP as an adjunct to periodontal intrabony defect therapy with those for patients who did not. We also analyze...

The general Markov model (GMM) of nucleotide substitution does not assume the evolutionary process to be stationary, reversible, or homogeneous. The GMM can be simplified by assuming the evolutionary process to be stationary. A stationary GMM is appropriate for analyses of phylogenetic data sets that are compositionally homogeneous; a data set is considered to be compositionally homogeneous if ...

AIM To evaluate the surgical strategies and functional outcomes of intramedullary cervicomedullary ependymoma (ICE). MATERIAL AND METHODS The authors retrospectively reviewed the clinical and imaging data of 28 ICE patients who underwent surgical resection, including 11 males and 17 females and the average age was 37.9 years (range:11-69 years). The modified McCormick grading system (mMG) was...

OBJECTIVE The treatment of giant cell tumor (GCT) is mainly performed surgically. However, GCT in spine seems difficult to treat because of the limited surgical accessibility and proximity. In this report, we analyzed the outcome of GCT treatment in spine. METHODS Between 2000 and 2012, 19 patients received treatment for GCT in spine. Median age at their first diagnosis was 31 years, 10 patie...

Abstract OBJECTIVE In glioblastoma (GBM) patients, controlling the microenvironment around tumor using various treatment modalities, including surgical intervention, is essential in determining outcome of treatment. This study was conducted to elucidate whether recurrence patterns differ according extent resection (EOR) and this difference affects prognosis. METHODS single-center included 358 e...