Edema
The swelling or accumulation of fluid in part of the body.

EMLA
Eutectic mixture of local anaesthetics. An anaesthetic cream applied locally to the skin to "numb" the area before uncomfortable procedures such as blood tests and I.V. starts.

Erythema
Redness of skin.

Erythrocytes
Red blood cells are the most common type of blood cell and the body's principal means of delivering oxygen from the lungs or gills to body tissues via the blood.

Ewing sarcoma
A particular type of primary bone or soft tissue tumour discovered by James Ewing. It is a less common primary bone cancer that often appears in the middle of the bone. Common sites include the hipbones, thighs, upper arms and ribs.

External central line
In cancer patients, an external central line is a type of central venous catheter (CVC or central venous line) that is inserted into a large vein near the heart, used to administer blood tests and drugs to patients. External lines have tubing on outside the patient’s skin, usually on the child's chest, and are called a BROVIAC™ catheter or HICKMAN™ catheter. Both have a long thin tube that reaches into the large vein leading into the heart. To use this type of line, a needle is placed through the end of the tubing. This is not painful and it must be flushed regularly to prevent blood clots. Because of the increased risk of infection among chemotherapy patients, care of the BROVIAC™ catheter or HICKMAN™ catheter is especially important. If infection occurs the line may need to be removed. See also internal line.