A practical guide to clinical photography prior to skin biopsy: key tips and proposed workflow.

High-quality clinical photography has become an integral part of dermatology in the context of patient evaluation and monitoring, clinical teaching, and research. Technological advancements in smartphones have allowed dermatologists to incorporate photography in workflows; however, acquiring quality photos poses its own challenges. Outlining a best practice approach to image capture prior to biopsy will facilitate establishing a team-based approach for the implementation of clinical photography in workflow. We propose this guide with the intent of improving patient care though photography in the clinical setting and the goal of integrating high-quality photography into routine clinical practice.

A case of periostomy intestinal metaplasia without adenomatous or dysplastic changes in an ulcerative colitis patient.

We strive to educate medical providers of the possibility of cellular transformation occurring as a parastomal complication and to emphasize the importance of close monitoring, as there is a risk, although low, of subsequent malignant transformation.

A novel subset of memory B cells is enriched in autoreactivity and correlates with adverse outcomes in SLE.

We previously reported that some systemic lupus erythematosus (SLE) patients have a population of circulating memory B cells with >2-fold higher levels of CD19. We show here that the presence of CD19(hi) B cells correlates with long-term adverse outcomes. These B cells do not appear anergic, as they exhibit high basal levels of phosphorylated Syk and ERK1/2, signal transduce in response to BCR crosslinking, and can become plasma cells (PCs) in vitro. Autoreactive anti-Smith (Sm) B cells are enriched in this population and the degree of enrichment correlates with the log of the serum anti-Sm titer, arguing that they undergo clonal expansion before PC differentiation. PC differentiation may occur at sites of inflammation, as CD19(hi) B cells have elevated CXCR3 levels and chemotax in response to its ligand CXCL9. Thus, CD19(hi) B cells are precursors to anti-self PCs, and identify an SLE patient subset likely to experience poor clinical outcomes.

Similar CD19 dysregulation in two autoantibody-associated autoimmune diseases suggests a shared mechanism of B-cell tolerance loss.

: We report here that dysregulation of CD19, a coreceptor that augments B-cell receptor (BCR) signaling, occurs at two B-cell differentiative stages in patients with systemic lupus erythematosus (SLE) and antineutrophil cytoplasmic autoantibody (ANCA) associated small vessel vasculitis (SVV). The naïve B cells of nearly all SLE and ANCA-SVV patients express approximately 20% less CD19 than healthy control (HC) B cells. In contrast, a subset of memory B cells of some SLE and ANCA-SVV Pts (25-35%) express two to fourfold more CD19 than HC B cells. These CD19(hi) memory B cells are activated and exhibit evidence of antigen selection. Proteome array analysis of 67 autoantigens indicates that CD19(hi) SLE Pts exhibit a distinct autoantibody profile characterized by high levels of antibodies to small nuclear ribonucleoproteins and low levels of antiglomerular autoantibodies. These findings have implications for autoreactive B-cell activation and suggest a shared mechanism of B-cell tolerance loss in these two diseases.