James Silver was an early settler in the area now known as Silver Spring Township which was organized as a Township bearing his name in 1757. The Township is situated on major east-west and north-south transportation routes, and shares the rich Revolutionary and Civil War heritage of the region.
Causes of pericardial effusion can include: 1  Inflammation of the pericardium following heart surgery or a heart attack. 2  Autoimmune disorders, such as rheumatoid arthritis or lupus. 3  Spread of cancer (metastasis), particularly lung cancer, breast cancer, melanoma, leukemia, non-Hodgkin's lymphoma or Hodgkin's disease.
However, too much fluid causes the pericardium to put pressure on the heart, which keeps the chambers from filling completely. This condition, called tamponade (tam-pon-AYD), results in poor blood circulation and an inadequate supply of oxygen to the body.