Accuracy of Cytologic vs Histologic Specimens for Assessment of Programmed Cell Death Ligand-1 Expression in Non-Small Cell Lung Cancer: A Systematic Review and Meta-Analysis.

Background: Programmed cell death ligand-1 (PD-L1) expression on tumor cells, evaluated by immunohistochemistry, guides the use of immunotherapy in advanced non-small cell lung cancer (NSCLC).

Research Question: What is the sensitivity and specificity of PD-L1 testing performed in cytologic vs paired histologic specimens in patients with NSCLC?

Study Design And Methods: The MEDLINE, Embase, Web of Science, and Cochrane Library databases were searched through June 1, 2021. The primary outcome was pooled sensitivity and specificity of PD-L1 testing performed on cytologic specimens compared with the reference standard of histologic specimens, analyzed at the PD-L1 expression cutoffs (tumor proportion score) ≥ 1% and ≥ 50%.

Impact of a Pleural Care Program on the Management of Patients With Malignant Pleural Effusions.

Background: Malignant pleural effusions (MPEs) are common and associated with a poor prognosis. Yet, many patients face suboptimal management characterized by repeated, nondefinitive therapeutic procedures and potentially avoidable hospital admissions.

Methods: We conducted a retrospective comparison of patients who underwent a definitive palliative intervention for MPE (indwelling pleural catheter or pleurodesis) at our center, before and after the implementation of a pleural care program.

Granulomatous tracheo-bronchitis from Crohn's disease.

Tracheo-bronchitis is an uncommon but important extra-intestinal manifestation of Crohn's disease. Our case demonstrates radiological and bronchoscopic evidence of tracheo-bronchitis secondary to Crohn's disease with pathology-proven granulomatous inflammation. This case highlights the importance of investigating airway involvement in patients with Crohn's disease and new respiratory symptoms.

The Accessibility, Feasibility, and Safety of a Standardized Community-based Tele-Pulmonary Rehab Program for Chronic Obstructive Pulmonary Disease: A 3-Year Real-World Prospective Study.

Few individuals with chronic obstructive pulmonary disease (COPD) are able to access pulmonary rehabilitation (PR) despite its importance. Barriers include increased travel time and lack of resources. Tele-PR has been proposed as a novel solution to overcome such barriers and improve access.

Delayed post-treatment with bone marrow-derived mesenchymal stem cells is neurorestorative of striatal medium-spiny projection neurons and improves motor function after neonatal rat hypoxia-ischemia.

Perinatal hypoxia-ischemia is a major cause of striatal injury and may lead to cerebral palsy. This study investigated whether delayed administration of bone marrow-derived mesenchymal stem cells (MSCs), at one week after neonatal rat hypoxia-ischemia, was neurorestorative of striatal medium-spiny projection neurons and improved motor function. The effect of a subcutaneous injection of a high-dose, or a low-dose, of MSCs was investigated in stereological studies.