Photo by Rachel Denny Clow, Corpus Christi Caller-Times // Buy this photo

Rachel Denny Clow/Caller-Times Cristina Rodriguez sits with her dogs Coby (left) and Flower at her home Thursday. Rodriguez, who has non-Hodgkin lymphoma, is having a Zumba benefit on Sunday and inviting people to register to donate bone marrow. Rodriguez is a former Zumba instructor.

CORPUS CHRISTI Had Cristina Rodriguez's cancer been more aggressive, had it penetrated her bones, things might have been different.

And while she has had chemotherapy, she has lost her hair and needs a stem cell treatment, but she doesn't need a bone-marrow transplant.

And for that, she's lucky.

Hispanics needing bone marrow have a harder time finding matching donors than do other ethnicities because few Hispanics have registered to donate.

"That could've easily been me," Rodriguez said.

That's why Rodriguez, 31, is trying to raise awareness about the importance for Hispanics to give bone marrow. The former Zumba instructor is hosting a Zumba event Sunday afternoon that partly is a fundraiser for her ongoing cancer treatments and partly a campaign to encourage more people to become donors.

Among the 8 million people signed up as bone marrow donors, 800,000 or 10 percent, identify themselves as Hispanic or Latino. Though Hispanics comprise more than one-third of Texas' population, only 17 percent of registered bone marrow donors in the state are Hispanic.

Overall, Hispanics have a 72 percent chance of finding a bone marrow donor, compared with whites, who have a 93 percent chance, according to the donor program. Only blacks fare worse, with a 63 percent likelihood of finding a donor.

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Former Zumba instructor with cancer encourages Hispanics to donate bone marrow