No abstract

After deployment to Southwest Asia, some soldiers develop persistent respiratory symptoms, including exercise intolerance and exertional dyspnea. We identified 50 soldiers with a history of deployment to Southwest Asia who presented with unexplained dyspnea and underwent an unrevealing clinical evaluation followed by surgical lung biopsy. Lung tissue specimens from 17 age-matched, nonsmoking subjects were used as controls. Quantitative histomorphometry was performed for evaluation of inflammation and pathologic remodeling of small airways, pulmonary vasculature, alveolar tissue and visceral pleura. Compared with control subjects, lung biopsies from affected soldiers revealed a variety of pathologic changes involving their distal lungs, particularly related to bronchovascular bundles. Bronchioles from soldiers had increased thickness of the lamina propria, smooth muscle hypertrophy, and increased collagen content. In adjacent arteries, smooth muscle hypertrophy and adventitial thickening resulted in increased wall-to-lumen ratio in affected soldiers. Infiltration of CD4 and CD8 T lymphocytes was noted within airway walls, along with increased formation of lymphoid follicles. In alveolar parenchyma, collagen and elastin content were increased and capillary density was reduced in interalveolar septa from soldiers compared to control subjects. In addition, pleural involvement with inflammation and/or fibrosis was present in the majority (92%) of soldiers. Clinical follow-up of 29 soldiers (ranging from 1 to 15 y) showed persistence of exertional dyspnea in all individuals and a decline in total lung capacity. Susceptible soldiers develop a postdeployment respiratory syndrome that includes exertional dyspnea and complex pathologic changes affecting small airways, pulmonary vasculature, alveolar tissue, and visceral pleura.

Rationale and Objectives: In February 2020, administrators for the US medical licensing examination (USMLE) announced that Step 1 reporting would change to pass/fail in hopes of reducing the overemphasis of USMLE performance on the residency selection system and improving medical student well-being. Our objective was to determine the perspectives of diagnostic radiology (DR), interventional radiology (IR), and nuclear medicine (NM) program directors (PDs) regarding pass/fail USMLE Step 1 scoring. Materials and Methods: A survey composed of thirteen questions on a three-point Likert scale, five demographic questions, and a freetext question was distributed to 179 DR, 84 IR, and 34 NM PDs from ACGME-accredited residency programs. Results: In total, 140 unique responses were obtained (response rate = 47.1%). The PD respondents had a male predominance of 79.1%, average age of 46 § 7.2 years, and average tenure of 5.9 § 5.2 years. A majority of PDs (69.6%) disagreed that the change is a good idea, and a minority (21.6%) believe the change will improve medical student well-being. Further, 90.7% of PDs believe a pass/fail format will make it more difficult to objectively compare applicants and most will place more emphasis on USMLE Step 2 scores and medical school reputation (89.3% and 72.7%, respectively). Conclusion: The lasting impact of pass/fail Step 1 scoring are uncertain and many radiology PDs do not support this change. While the central motivations to reduce the overemphasis on USMLE Step 1 performance and improve medical student well-being are admirable, it remains to be seen if pass/fail scoring will accomplish these goals.

No abstract

No abstract