Speculation surrounds FDA commissioner's resignation.(Lester Crawford resigned as commissioner of Food and Drug Administration)(Brief Article)

ROCKVILLE, Md. -- Lester Crawford resigned Friday as commissioner of the Food and Drug Administration, ending a FDA career that included separate stints as acting FDA commissioner and two months as a confirmed commissioner.

One day following Crawford's announcement, the White House issued a release naming Andrew von Eschenbach, currently director of the National Cancer Institute, as acting FDA commissioner. Von Eschenbach, who intends to remain in his role at the Cancer Institute, said it was too soon to speculate whether he would be nominated for the FDA commissioner post on a permanent …