When a woman complained of serious migraines and sought doctor's advice, she was asked to undergo surgery. This surgery not only shocked her but also the doctors. Surgeons who conducted the surgery were under the impression that they were removing a tumour from her throat but to their shock, they discovered a large leech wriggling around inside her sinuses.

The unnamed 63-year-old woman, from Ha Giang in Vietnam, went to the hospital and complained about having "constant migraines" for three months. After an examination, the doctors diagnosed a throat tumour and an immediate surgery was scheduled to take it out.