A man in Hong Kong has been given a shock diagnosis by doctors - he is actually a woman.
The 66-year-old had gone to the doctor suffering from a swollen abdomen, which was indentified as a large ovarian cyst, the Hong Kong Medical Journal has reported.
The condition was the result of two rare genetic disorders.
The patient had Turner Syndrome, which is caused by a problem with chromosomes and leads to characteristics including infertility and short stature. The patient had stopped growing at the age of 10.
The other disorder was congenital adrenal hyperplasia which causes an increase in male hormones. This made the patient, who had a beard and male organs, appear like a man.
"Were it not due to the huge ovarian cyst, his intriguing medical condition might never have been exposed," doctors wrote in the study.
The doctors said there have been only six cases where both genetic disorders have been reported in medical literature. Turner Syndrome on its own affects only one in 2,500 to 3,000 females.
The Vietnam-born Chinese patient decided to continue living as a man and would take testosterone supplements.