A woman found a nose-like growth on her back eight years after stem cell treatment[GETTY]

The unnamed woman had tissue from her nose implanted in her spine to help cure her paralysis but the procedure failed.

Eight years later the woman complained of increasing pain in the area and doctors found a three-centimetre long growth made of nasal tissue.

It was discovered last year and was also made of bits of bone and nerve branches but it had not connected with her spinal nerves.

Surgeons at the University of Iowa Hospitals removed the growth from the US citizen, then aged 28, which they said was not cancerous.

The unnamed woman had tissue from her nose implanted in her spine [GETTY / PIC POSED BY MODEL]

Doctors discovered a nose-like growth on a woman's back eight years after stem cell treatment

However, it was secreting a "thick copious mucus-like material" which likely caused the pain on the woman's spine.

The results of the surgery were published in New Scientist today.

George Daley, a stem cell researcher at Harvard Medical School, said: "It is sobering.

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NOSE grows on woman's BACK after failed stem cell treatment