Leg swelling related to fluid buildup. Leg swelling caused by the retention of fluid in leg tissues is known as peripheral edema. It can be caused by a problem with the circulatory system, the lymphatic system or the kidneys. Leg swelling isn't always a sign of a heart or circulation problem. You may often experience swelling due to fluid buildup from being overweight, being inactive, after sitting or standing for a long time, or wearing tight stockings. Factors related to fluid buildup include: Acute kidney failure.
Lois Lowry wrote Number the Stars along with many other books.
Though events of Number the Stars are based in actual historical fact, the specific story is Lowry's own mixture of fiction, oral histories, and research. The novel takes place in Denmark in 1943, three years after the Germans invaded Denmark. King Christian X was the Danish king from 1912 to 1947.