“
“Objectives: Aberrant intra-epithelial C59 Wnt concentration lymphocytes (IELs) are the hallmark of refractory coeliac disease type II RCDII and considered a premalignant cell population from which aggressive enteropathy-associated T cell lymphoma (EATL) can evolve. The aim of this study was to gain further insight in the origin and characteristics of aberrant IELs by analysing T-cell receptor (TCR) rearrangements, and by immunophenotypic analysis of aberrant IELs.\n\nDesign: Duodenal biopsies from 18 RCDII patients and three RCDII cell lines were analysed for the presence of TCR delta, gamma, and beta rearrangements. In addition, IELs isolated from biopsies derived from RCDII patients

were phenotypically analysed.\n\nResults: Aberrant IELs showed an upregulated expression of granzyme B and decreased expression of PCNA. TCR rearrangements in the aberrant IEL population in biopsies of RCDII patients were heterogenic, which is most likely due to a variation in maturity. Similarly,

RCDII cell lines displayed a heterogenic TCR rearrangement pattern.\n\nConclusion: Aberrant IELs originate from deranged immature T lymphocytes and display clear differentiation to a cytotoxic phenotype. Aberrant IELs displayed different stages of maturity between RCDII patients, of which only the patients Rigosertib clinical trial harbouring the most mature aberrant IEL population developed an EATL. (C) 2012 Elsevier Ltd. All rights reserved.”
“Purpose: To describe the utility of using wide-angle digital imaging in the training for retinopathy of prematurity with laser and in identifying common locations of skip areas that were present after initial panretinal photocoagulation with indirect ophthalmoscopy by ophthalmologists-in-training.\n\nMethods: Retrospective review of digital HTS assay retinal images of 22 eyes of 12 infants who had undergone laser treatment for retinopathy of prematurity performed by ophthalmologistsin- training. Presence of skip areas was determined by masked review of photographs. The location of skip areas was

classified based on two axes: 1) circumferential (in one of six clock-hour regions) and 2) radial (adjacent to the retinal ridge, adjacent to the ora serrata, or isolated patches of greater than one laser burn width).\n\nResults: A total of 30 skip areas were identified in the 22 eyes treated with laser photocoagulation. Based on the circumferential location, a significant difference in skip area distribution was found (P = 0.02). Regions with the highest percentage of skip areas were between the clock hours 11: 00 to 1: 00 (45%) and 5: 00 to 7: 00 (41%). Based on the radial location, 40% of all skip areas were found near the ora serrata, 17% near the ridge, and 43% as isolated patches (P = 0.14).\n\nConclusion: Skip areas after indirect panretinal laser photocoagulation by ophthalmologists-in-training were easily visualized by wide-angle digital imaging, after being missed by the trainee during the initial treatment procedure.