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Eight years ago, olfactory stem cells were taken from the patient’s nose and implanted in her spine. The stem cells were meant to turn into nerve cells that would help repair the woman’s spine, curing her of paralysis. Instead, it seems they decided to do what they were originally meant to do and attempt to build a nose. Over a number of years, the nose-like growth eventually became big enough and nosy enough to cause pain and discomfort to the patient. As reported by New Scientist, “surgeons removed a 3-centimetre-long growth, which was found to be mainly nasal tissue, as well as bits of bone and tiny nerve branches that had not connected with the spinal nerves.” [DOI: 10.3171/2014.5.SPINE13992 - "Autograft-derived spinal cord mass following olfactory mucosal cell transplantation in a spinal cord injury patient"]