Yuraj Singh, the famous Indian cricketer, has been diagnosed with cancer after doctors reportedly discovered a Stage-1 tumor in his left lung.

Tests revealed that Singh has a rare form of cancer called mediastinal seminoma. He is currently undergoing chemotherapy in the United States. The tumor is in between his lungs, but it is not considered lung cancer.

Dr. Nikesh Rohatagi of the Max Cancer Centre in Dehli has been monitoring the situation and treating Singh. Rohatagi reportedly said that Singh's illness is curable.

It is located between the two lungs, rather than in the lungs. It's a rare disease but something which can be cured. I am confident he will be cured and return to cricket, reported BBC.

After the reports of Singh's chemotherapy hit the newspapers, messages of support poured in for Singh. Twitter users used the social media site to express their support and wish him luck.

Hey people lets pray for Yuraj Singh's fast recovery he is suffering from cancer...He is a great fighter and he will overcome this.pls pray, wrote Twitter user ShambhaviSingh.

Yuraj Singh - Get well soon, I want you back on ground giving, wrote Twitter user jaafernaqvi.

Even Singh's teammates and other Indian celebrities began Tweeting well wishes for the 30-year-old left hander.

He is a born fighter. I request media to respect Yuvraj's privacy and allow him to concentrate on his recovery. He will be back with a bang, wrote Harbhajan Singh.

Shocked to learn of Yuvraj Singh down with cancer..Yuvraj if you read this, know that we all pray for you..All shall and will be well, wrote Bollywood superstar Amitabh Bachchan.

Singh's health worsened during last year's World Cup, in which he helped his team bring the title home to his country.  

While Sing's predicament can be overwhelming, it is certainly beatable. In fact, he Tweeted last month that he has been seeking inspiration from other athletes who had endured cancer, such as Lance Armstrong, reported BBC.

Here is a brief look at other superstars who fought through cancer:

Lance Armstrong

Lance Armstrong may be the most famous athlete to endure cancer and make a comeback. After winning the Tour De France, the famed cyclist was first diagnosed on Oct. 2, 1996 when he was only 25. Doctors said he had developed stage three testicular cancer that to his lungs, abdomen and brain. After chemotherapy and several surgeries, his cancer went into remission. By 1998, he began training to continue his cycling career. He went onto compete several more times, winning the Tour De France a total of seven times in his career, reported IBN Live.

Armstrong also founded the Lance Armstrong Foundation, dedicated to helping those afflicted with cancer.

Mike Lowell

Baseball player Mike Lowell is known as the Red Sox third baseman with the hot hands. However, only a year after making his major league debut for the New York Yankees and being traded to the Florida Marlins, Lowell was diagnosed with testicular cancer at 24 years old, reported IBN Live.

On Feb. 21, he underwent surgery and endured three weeks of radiation treatment. He missed all spring training, but after just four days in the minors, the Marlins called him back up. He finished the season with a .253 batting average, with 12 home runs and 47 RBIs.

Martina Navratilova

Martina Navratilova is a retired tennis player, winning 18 Grand Slam singles titles, 31 Grand Slam women's doubles titles and 10 Grand Slam mixed doubles titles. However, in 2010, she was diagnosed with breast cancer after a routine mammogram. The discovery of a tumor came as a complete shock to Navratilova.

I feel so in control of my life and my body, and then this comes, and it's completely out of my hands, she said, according to BBC.  

However, she had the tumor surgically removed in March of 2010. Now, she speaks out women on the importance of receiving mammograms in order to catch potential threats early.