Henry Fountain reports that surgeons in Stockholm, Sweden replaced a patient's cancerous trachea (windpipe) with a synthetic one seeded with the patients cells. The synthetic windpipe was made of nano-scale plastic fibers coated with stem cells from the patient's bone marrow. The surgeon use a tissue engineered trachea built to match CT scans of the patients cancerous one without the tumor. The plastic form was rotated in a solution with the patient's stem cells for several days while the cells adhered to the plastic and began growing. The new trachea fit the patient perfectly. The patient is home anticipating returning to work. Fountain, H. Synthetic Windpipe Used to Replace Cancerous One, New York Times, January 12, 2012.