Giant Retroperitoneal Liposarcoma: A Rare Surgical Occurrence.

Retroperitoneal liposarcoma is a rare malignancy that arises from adipocytes and can expand significantly before manifesting clinical symptoms. Instances of giant retroperitoneal liposarcoma, defined as tumors larger than 30 cm, are extremely rare, with fewer than 20 reported cases. This case report presents a 68-year-old patient with a significant abdominal mass, ultimately identified and treated as a well-differentiated retroperitoneal liposarcoma.

Mechanistic investigation of sustainable heme-inspired biocatalytic synthesis of cyclopropanes for challenging substrates.

Engineered heme proteins exhibit excellent sustainable catalytic carbene transfer reactivities toward olefins for value-added cyclopropanes. However, unactivated and electron-deficient olefins remain challenging in such reactions. To help design efficient heme-inspired biocatalysts for these difficult situations, a systematic quantum chemical mechanistic study was performed to investigate effects of olefin substituents, non-native amino acid axial ligands, and natural and non-natural macrocycles with the widely used ethyl diazoacetate.

Assessment of harm reduction receipt and infectious diseases outcomes in United States Veterans with opioid use disorder and history of injection drug use.

Background: Injection drug use (IDU) may lead to negative health outcomes and increased healthcare utilization. In US Veterans (USV) with opioid use disorder (OUD), there is sparse information about healthcare utilization, harm reduction prescription, and outcomes associated with IDU, including severe injection-related infections (SIRI). We assessed psychosocial factors, clinical outcomes, and harm reduction receipt in a cohort of USV with OUD, specifically focusing on persons who inject drugs (PWID).

Producing a High-Quality Surgical Video.

Producing high-quality surgical videos requires an understanding of cognitive theory and a working knowledge of film principles. In this editorial, we delve into pre-production, filming, and editing fundamentals that help create a professional product and highlight techniques to optimize knowledge acquisition through video content.