Doctors at some hospitals told the mother that the girl could be maturing early and asked her not to add too much dietary supplements for the toddler.

However, the mother realized that she hardly added any supplements for her daughter, and she decided to take her to other hospitals, and finally they went to Jiangsu Province Hospital where doctors diagnosed her the disease.

Doctors detected the lump in Yanyan's left breast and a swollen lymph node in her armpit. A biopsy confirmed that the lump was a kind of breast cancer that is commonly associated with adult women.