Jen Arnold Has Cancer; 'Little Couple' Star Determined to 'Beat This!'

Jen Arnold, star of "The Little Couple," is battling cancer. The neonatologist, 39, and husband Bill Klein, 38, are parents to two young children whom they adopted after struggling with infertility. Arnold decided to go public as she has many, many fans around the world she thought should know.

"I have recently been diagnosed with a rare type of cancer and am currently undergoing treatment, including surgery and chemotherapy. I am very fortunate as the prognosis is good. While there is never a good time to get news like this, getting it just as we are building our new family is tough in many ways. But being surrounded by the love of my husband and our two beautiful children is actually in many ways giving me the strength to fight it even stronger," Arnold told People.

She did not reveal exactly what type of cancer she is battling but remains hopeful that with the proper treatment, she will soon be feeling much better and be in remission. Arnold and Klein decided to share their story of dwarfism with the world on TLC's popular series. Fans watched them exchange vows, struggle with infertility and eventually adopt son Will from China and daughter Zoey from India.

"For a lot of people, loss tears them apart," Arnold told the magazine earlier. "In general, we are pretty tough people. I feel very lucky and fortunate to have the wonderful life I have. We are good at putting things in perspective because of our life experiences. I am not a person to give up when something is important. We feel so lucky to be parents."

She has the full support of husband Bill and both of their families, who have been with them every step of the way.

"It's out there! But I am in the process of beating this!" Arnold tweeted. It shows her resolution to fight with everything she has.