Imaging and Pathology Correlations for Different Risk Stratification Models for Intermediate-risk Prostate Cancer.

Background/aim: We evaluated whether sub-stratifying intermediate-risk (IR) prostate cancer using the Memorial Sloan Kettering Cancer (MSKCC) or Prostate Cancer Risk Stratification (ProCaRS) model predicts for adverse imaging or pathologic features.

Patients And Methods: 56 consecutive IR patients who underwent multi-parametric MRI (mpMRI) and radical prostatectomy (RP) were studied. The different groups were tested for correlation with adverse findings.

Practical considerations in reducing swallowing dysfunction following concurrent chemoradiotherapy with intensity-modulated radiotherapy for head and neck cancer.

Data have emerged that the addition of concurrent chemotherapy to radiation can lead to swallowing dysfunction that may have an impact on patient quality of life and lead to significant morbidities such as poor nutritional status, enteral feeding tube dependence, and aspiration pneumonia. Although intensity-modulated radiation therapy (IMRT) for head and neck cancer was initially developed to spare the parotid gland to reduce xerostomia, attention has recently focused on its utility to selectively decrease radiation dose to specified anatomic structures responsible for a functional swallow. Recent reports have proposed a variety of dose thresholds or constraints to these swallowing-related structures, which may guide IMRT planning with the aim of reducing dysphagia.

Enteropathy-associated T cell lymphoma presenting with acute abdominal syndrome: a case report and review of literature.

Introduction: Enteropathy-associated T cell lymphoma (EATL) is a rare peripheral non-Hodgkin's T cell lymphoma originating from intraepithelial T lymphocytes of the intestines. In general, this condition has a poor prognosis. A common initial presentation of this cancer which is a small intestinal perforation necessitating emergency surgery is of interest to practicing surgeons.

Directed evolution to re-adapt a co-evolved network within an enzyme.

We have previously used targeted active-site saturation mutagenesis to identify a number of transketolase single mutants that improved activity towards either glycolaldehyde (GA), or the non-natural substrate propionaldehyde (PA). Here, all attempts to recombine the singles into double mutants led to unexpected losses of specific activity towards both substrates. A typical trade-off occurred between soluble expression levels and specific activity for all single mutants, but many double mutants decreased both properties more severely suggesting a critical loss of protein stability or native folding.