Tasha Imberi, 17, never thought a heart screening at Eureka School would turn up an 11-pound tumor.
During the routine health screening for students in January, technicians advised her to have her abdomen examined after they noticed it was abnormally protruding.
"I didn't think I had something major going on," Imberi said.
A few days after an ultrasound and other tests, the tumor was removed in February.
She was found to have a rare form of ovarian cancer.
"I just didn't know what to think at first," said Susan Imberi, Tasha's mother. "It was a scare."
After the surgery in Sioux Falls, a nurse advised Tasha to have fun with her hair before undergoing chemotherapy treatments.
"She told me to dye it a crazy color or something before I have to shave it off," she said.
Even though she herself is undergoing cancer treatments, she still thought of helping other patients who have cancer.
A couple weeks ago, Tasha cut her hair once more for Locks of Love.
Since the third or fourth grade, she has been donating her hair to the organization, which makes hairpieces for children who have lost their hair due to medical reasons.
"I think it's really nice that she did it," said Susan Imberi.
Tasha's friend, Nicole Rau, a sophomore at Eureka School, helped her dye her new, shorter hair a vibrant shade of pink.
"It was exciting," Nicole said. "I wanted to help her with anything I can so she can stay strong and happy."
"I've always been glad to help other people out," she said. "I just never thought it would be me — it still shocks me."
Susan Imberi said her daughter has been incredibly positive.
"She has very good thoughts about what's coming in the future," she said. "She never, ever complains about what's going on."
Her daughter has just finished the first of four rounds of chemotherapy. Each round lasts three weeks.
The treatment involves five days of chemotherapy the first week, then one visit a week for the remaining two.