Retrograde Balloon-Assisted Deep Enteroscopy in the Diagnosis of Metastatic Melanoma.

A 74-year-old male with a history of metastatic melanoma presents with persistently abnormal small bowel findings on PET-CT scan. The patient had persistent FDG uptake near the ileocolic junction on imaging, concerning for metastatic melanoma. Capsule endoscopy demonstrated ulcerated mucosa in the distal ileum.

Interobserver reliability of methods to determine complete resection of adenomas in colonoscopy.

Background: Forceps margin biopsy and polypectomy specimen margins have both been used to assess for polypectomy resection adequacy. The interobserver reliability of the two methods has not been well described.

Methods: The interpretability of polypectomy specimens for presence of residual neoplasia at the margin was assessed by two blinded pathologists.

Low Referral Rate for Genetic Testing in Racially and Ethnically Diverse Patients Despite Universal Colorectal Cancer Screening.

Background & Aims: Guidelines recommend that all colorectal tumors be assessed for mismatch repair deficiency, which could increase identification of patients with Lynch syndrome. This is of particular importance for minority populations, in whom hereditary syndromes are under diagnosed. We compared rates and outcomes of testing all tumor samples (universal testing) collected from a racially and ethnically diverse population for features of Lynch syndrome.

Alternative approaches to polyp extraction in colonoscopy: a proof of principle study.

Background And Aims: A limitation of determination of the completeness of resection in polypectomy is polyp fragmentation. When a polyp fragments, the pathologist cannot determine resection completeness. Alternative approaches to reduce polyp fragmentation include reducing shearing forces on the polyp or removing polyps through the instrument channel.

γ-Glutamylcysteine ameliorates oxidative injury in neurons and astrocytes in vitro and increases brain glutathione in vivo.

γ-Glutamylcysteine (γ-GC) is an intermediate molecule of the glutathione (GSH) synthesis pathway. In the present study, we tested the hypothesis that γ-GC pretreatment in cultured astrocytes and neurons protects against hydrogen peroxide (H(2)O(2))-induced oxidative injury. We demonstrate that pretreatment with γ-GC increases the ratio of reduced:oxidized GSH levels in both neurons and astrocytes and increases total GSH levels in neurons.