Active Surveillance of Small Renal Masses in a Large Danish Cohort: Assessing Proficiency in Patient Selection.

Small renal masses (SRMs) are often benign or early-stage cancers with low metastatic potential. The risk of overtreating SRMs is a particular concern in elderly or comorbid patients, for whom the risks associated with active surveillance (AS) are lower than the risks of surgical management. The aim is to systematically analyse a large cohort of AS patients to provide valuable insights into patient selection and outcomes concerning delayed intervention (DI) and AS termination. We retrospectively analysed data from 563 AS patients across three institutions from 2012 to 2023. Patients were classified into three groups: those currently in AS (n=283), those who underwent DI (n=75), and those who terminated AS (n=205). DI patients were younger, and had larger initial tumour size and higher growth rates (GRs) than AS patients. A significant number of patients terminated their AS, mainly due to comorbidities and death from non-kidney cancer causes, suggesting unsuitability for initial AS enrolment. AS appears to be a safe initial management strategy for SRMs, with an overall low GR and only one patient developing metastasis. The patient selection for AS appears inconsistent, highlighting the need for improved criteria to identify AS candidates, especially considering comorbidities and the possibility of subsequent active treatment in the event of progression.

Reconstructive urologi.

This review summarises the current reconstructive urological procedures seeking to optimise urinary tract function. This includes nephrectomy to avoid complications in non-functioning kidneys and reconstruction of uretero-pelvic junction stenosis. Re-implantation of the ureters is indicated in case of reflux or stenosis. The technique depends on the defect and ranges from re-implantation to transplantation of the kidney into the pelvis. Intestine is used for bladder augmentation or to create a new reservoir. Urethral reconstruction is used for complicated strictures, while penile reconstruction includes insertion of implants and straightening procedures.

Validation of a surgical workspace scale during robot-assisted surgery.

BACKGROUND: A sufficient surgical workspace is crucial to avoid complications. Within classic laparoscopy, many subjective surgical rating scales (SRSs) have previously been used to evaluate the surgical workspace. This study aimed to validate a modified version of the 5-point SRS during robot-assisted radical nephrectomy (RARN). METHODS: Thirty-two intra-operative videos of intraperitoneal spaces were recorded from eight patients who underwent RARN. To attain the visualisation of different types of workspaces, we recorded 20 s panoramic videos of different pneumoperitoneum, namely 3, 5, 7 and 12 mmHg. The videos were randomised and presented two times to eight experienced robotic surgeons to evaluate the workspace using our modified 5-point SRS. Both inter-and intra-rater reliabilities were tested. RESULTS: The results of the validation study showed moderate inter-rater and good to excellent intra-rater reliability. CONCLUSION: This is a valid tool that can be confidently used by future researchers in the field of robot-assisted surgery.

Plasmodium falciparum parasites expressing pregnancy-specific variant surface antigens adhere strongly to the choriocarcinoma cell line BeWo.

Placenta-sequestering Plasmodium falciparum parasites causing pregnancy-associated malaria express pregnancy-specific variant surface antigens (VSA(PAM)). We report here that VSA(PAM)-expressing patient isolates adhere strongly to the choriocarcinoma cell line BeWo and that the BeWo line can be used to efficiently select for VSA(PAM) expression in vitro.