In medicine, a port is a small medical appliance that is installed beneath the skin. A catheter connects the port to a vein. Under the skin, the port has a septum through which drugs can be injected and blood samples can be drawn many times, usually with less discomfort for the patient than a more typical "needle stick".
Ports are used mostly to treat hematology and oncology patients. Ports were previously adapted for use in hemodialysis patients, but were found to be associated with increased rate of infections and are no longer available in the US.
The port is usually inserted in the upper chest (known as a "chest port"), just below the clavicle or collar bone, leaving the patient's hands free.
The tumors are usually noncancerous (benign), but sometimes can become cancerous (malignant). Symptoms are often mild. However, complications of neurofibromatosis can include hearing loss, learning impairment, heart and blood vessel (cardiovascular) problems, loss of vision, and severe pain.
As a sump tube where the physician desires to keep the stomach continuously and completely evacuated of swallowed air, swallowed saliva, gastric secretions or fresh blood the nasogastric (NG) tube is used with a vacuum source. The original Levin tube failed Dr. Harold W. Andersen in 1958 and he endeavored to engineer a double lumen NG tube to reduce the vacuum of the aspiration lumen by adding a vent lumen to the outside including an anti-reflux filter at the proximal end of the vent lumen and additional markings for placing the tube in the patient. This was the first double-lumen nasogastric tube.
Also indicated for the symptomatic relief of itch associated with chickenpox.
Read more: http://www.cancer.ca/en/cancer-information/diagnosis-and-treatment/stem-cell-transplant/harvesting-stem-cells/?region=on#ixzz4S6I53iHX