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'Little Couple' Star Shares Details of Her Cancer Battle
PHOTO: Television personalities Jen Arnold, right, and Bill Klein arrive at the 36th Annual Gracie Awards Gala at The Beverly Hilton hotel, May 24, 2011, in Los Angeles.

(Photo credit: Chelsea Lauren/Getty Images)

Jen Arnold is sharing more details about her ongoing cancer battle.

The star of TLC's "The Little Couple," told PEOPLE magazine that she was diagnosed with stage 3 choriocarcinoma, a rare cancer that formed during a non-viable pregnancy she had in September.

"The one time I get pregnant," she told the magazine, "I get cancer."

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Arnold and her husband, Bill Klein, both 39, were in India with their son Will, 3, to pick up their daughter Zoey, 2, when Arnold began bleeding. After her OB-GYN advised her to return home to Houston, Klein stayed with their kids to finish necessary adoption paperwork for Zoey.

"My initial thoughts were all about Zoey," Arnold tells PEOPLE. "But then the bleeding got worse and I was feeling light-headed. It was a hard decision, but I had to go home."

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Ultimately, after chemotherapy failed to shrink the tumor in her uterus, doctors were forced to perform a hysterectomy.

"We wanted to avoid surgery in her case because of her shortened airway and the difficulties she has had in the past with surgeries," Dr. Concepcion R. Diaz-Arrastia, director of gynecology oncology at Baylor College of Medicine, who is treating Arnold, told the magazine. "But we felt we had no choice. The disease was not responding to chemotherapy. We had to do this in order to save her life."

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