A woman has developed a nose-like growth eight years after a stem cell treatment to cure her paralysis failed.
At the Hospital de Egas Moniz in Lisbon, Portugal, the unnamed woman, a U.S. citizen, had tissue from her nose implanted in her spine.
Doctors hoped the cells would develop into neural cells and help repair the nerve damage to the woman's spine.
But the treatment failed.
However, last year, eight years after the stem cell operation, the woman, then 28, complained of increasing pain in the area.
Doctors discovered a three-centimetre-long growth, which was found to be mainly nasal tissue, as well as bits of bone and nerve branches that had not connected with the spinal nerves.