Jenna Patel, 21, from Bolton became concerned after noticing a “little lump” while carrying out work experience at a primary school.
When she first visited a doctor, she was allegedly told it was “nothing to worry about”.
After the lump started to grow, she was diagnosed with Ewing sarcoma in July last year, but died on May 13 – less than a year after the diagnosis.
Ewing sarcoma is a rare cancer which can cause tumours to grow in the bones or in the surrounding soft-tissues.
The 21-year-old received chemotherapy and took part in a clinical trial, but the treatment eventually stopped working and the cancer spread to her lungs.
Just two weeks before her death, doctors told Jenna there was nothing more they could do.
Paying tribute to Jenna, her brother Liam, 17, described her as “bubbly” and said she was “always smiling”.
He told Manchester Evening News: “Jenna was always making sure everyone else was alright before herself. There was not a time of the day when she was not smiling.”
Liam described the moment she found the lump, saying: “She came home one day and called me over.
“She said I have a lump on my shoulder, and I told her it does not look bad, but to get it checked out.
“She went to the doctor and they said ‘it’s nothing to worry about, we think it’s a cyst.'”
Jenna’s family have set up a GoFundMe page to raise funds for Ewing’s Sarcoma Research Trust, which supports families and funds research into the disease.
So far, almost £6,000 has been donated – more than six times the initial target.
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