To the Editor: We find the description of a “new arenavirus” by Palacios and colleagues (March 6 issue)¹ interesting, but we consider several of their conclusions to be unjustified or misleading. First, the characterized virus is simply lymphocytic ...

To the Editor: I do not agree with Svilaas and colleagues (Feb. 7 issue)¹ that thrombus aspiration during percutaneous coronary intervention (PCI) in patients who have myocardial infarction with ST-segment elevation improves clinical outcomes. In their ...

To the Editor: Hannan et al. (Jan. 24 issue)¹ are to be commended for appropriately selecting patients with multivessel coronary disease for stenting or bypass surgery. Their clinical judgment ensured that unadjusted survival rates were equal in the two ...

To the Editor: Schermerhorn and colleagues (Jan. 31 issue)¹ examined the relative effectiveness of endovascular versus open repair of abdominal aortic aneurysms. They used a propensity-score approach to match the open-repair and endovascular-repair ...

To the Editor: Hauser et al. (Feb. 14 issue)¹ report positive results of a phase 2 trial of rituximab in relapsing–remitting multiple sclerosis. I wish to draw attention to the Food and Drug Administration (FDA) public health advisory concerning ...

To the Editor: As Katz and Harris (Feb. 21 issue)¹ note, electromyography is not routinely necessary in the diagnostic workup of spinal stenosis. However, a complete electrodiagnostic examination (i.e., nerve-conduction studies and electromyography) can ...

To the Editor: Christopoulos et al. (March 6 issue)¹ report a case of primary ovarian insufficiency associated with imatinib. Although the data provided are suggestive of primary ovarian insufficiency, the cause-and-effect relationship is speculative, ...

Despite their self-limited course, infantile capillary hemangiomas can impair vital or sensory functions or cause disfigurement. These authors have observed in 11 children that propranolol can inhibit the growth of these hemangiomas.