Subcutaneous Panniculitis-Like T-Cell Lymphoma Presenting as a Targetoid Plaque in a Pediatric Patient: A Case Report and Review of Literature.

Subcutaneous panniculitis-like T-cell lymphoma (SPTCL) is a rare type of non-Hodgkin lymphoma characterized by subcutaneous nodules, indurated plaques, erythema, and cellular infiltrates in the subcutaneous fat. Biopsies show neoplastic cells expressing cytotoxic T-cell markers and displaying moderate cytologic atypia while sparing the dermis and epidermis and showing variable degrees of necrosis, hemorrhage, and inflammatory changes. We describe a pediatric case of SPTCL in a 6-year-old boy, presenting with an unusual targetoid plaque and systemic symptoms, who showed significant improvement on systemic immunosuppressants without chemotherapy.

Photocatalytic Methanol Dehydrogenation with Switchable Selectivity.

Switchable selectivity achieved by altering reaction conditions within the same photocatalytic system offers great advantages for sustainable chemical transformations and renewable energy conversion. In this study, we investigate an efficient photocatalytic methanol dehydrogenation with controlled selectivity by varying the concentration of nickel cocatalyst, using zinc indium sulfide nanocrystals as a semiconductor photocatalyst, which enables the production of either formaldehyde or ethylene glycol with high selectivity. Control experiments revealed that formaldehyde is initially generated and can either serve as a terminal product or intermediate in producing ethylene glycol, depending on the nickel concentration in the solution.

Progression from outpatient referral to spinal surgery in an Australian cohort with degenerative spinal disease.

Background: Degenerative spine disease (DSD) encompasses a range of conditions with increasing prevalence and a significant burden of disease. Patients with DSD are often referred to a neurosurgery clinic with lengthy waiting times from referral to consultation. The reported proportion of referred patients who undergo spinal surgery varies from 20.

Cerebrospinal Fluid Composition of Infants with Ischemic Stroke.

Objective: To characterize the cerebrospinal fluid (CSF) of infants with stroke and compare those findings to the CSF of infants with bacterial meningitis and neither condition in the first 14 postnatal days.

Study Design: Cohort study of 30,092 infants who received a lumbar puncture in the first 14 postnatal days discharged from >300 neonatal intensive care units from 1997-2020. CSF parameters were compared between infants with stroke and bacterial meningitis using non-parametric hypothesis testing and quantile regression.