The 24-year-old, who currently plays for Bournemouth in the second tier of English football, posted a Twitter message on Wednesday saying he would start treatment next week.
Lymphoma is a form of cancer that affects the lymphatic system, or “the tissues and organs that produce, store, and transport white blood cells that fight infection,” according to the United States Centers for Disease Control and Prevention.
“While this has been a shock to me and my family, the prognosis is positive and I have no doubts that I will make a full recovery and return to play as soon as possible,” added Brooks.
Brooks, who played in the English Premier League before relegation from Bournemouth in 2020 and who is considered one of his country’s most promising talents, has withdrawn from the Wales squad because of illness last week.
He thanked the medical staff for spotting potential symptoms and the doctors who diagnosed him.
“I would like to thank the doctors, nurses, consultants and staff who treated me for their professionalism, warmth and understanding during this time,” he added.
“I want to thank everyone at the Football Association of Wales because without the prompt attention of their medical team we may not have detected the disease.
“I would also like to thank AFC Bournemouth for all their support and help last week.”
“I would like to ask that my privacy be respected”
The football community has rallied with the midfielder since he shared his diagnosis, with clubs in all leagues sending their best wishes.
His current squad have said they will support their player and provide all the support he needs.
“I know everyone will want to show their love and support for David, which will help him immensely during his recovery, but we also urge you all to respect his privacy and that of his family during this time.”
Brooks has played nine times for Bournemouth this season, but will walk away from the game as he begins his recovery.
“While I appreciate the media’s attention and interest, I would like to request that my privacy be respected in the coming months and will share updates on my progress when I can,” Brooks continued. .
“In the meantime, thank you all for their messages of support – it means so much and will continue to do so in the months to come.
“I look forward to seeing you all again and playing the sport I love very soon.”