The pop sensation penned a letter to her fans through her personal Tumblr page discussing the sad news.
Taylor explained that she has asked her mum to get โscreened for any health issuesโ as a gift this past Christmas. Sadly, despite Taylorโs mum feeling โperfectly fineโ and there being โno red flagsโ, Andrea was diagnosed with cancer.
Taylor, known for her close relationship with her fans, decided to confide in them, and encourage others to get screened.
โShe wanted you to know because your parents may be too busy juggling everything theyโve got going on to go to the doctor, and maybe you reminding them to go get checked for cancer could possibly lead to an early diagnosis and an easier battle,โ she wrote.

A Throwback snap of Taylor and her mum, Andrea.
โOr peace of mind in knowing that theyโre healthy and thereโs nothing to worry about. She wanted you to know why she may not be at as many shows this tour. Sheโs got an important battle to fight.โ
The Shake it Off singer is used to sharing big events in her life through music, but for Taylor there was a lot more to discuss.
โUsually when things happen to me, I process them and then write music about how I feel, and you hear it much later,โ she explained.
โThis is something my family and I thought you should know about now.โ
Taylor and her mum, Andrea, share an incredibly close bond. The singer shared a story back in 2009 with US journalist Katie Couric about how much her mum has helped her.
โI had that group of friends when I was about 12 and then I lost that group of friends. They all decided they didnโt want to hang out with me anymore. I would go sit at the lunch table and theyโd move their trays to another table, which is not fun to go through. So, at that point, all I had was my mom.โ Taylor shared.
At one point Andrea was Taylorโs โonly friendโ.
โI couldnโt understand why my friends were being so mean to me. She would just take me on these adventures and we would drive around and go to towns weโd never seen before. Those adventures and those days of just running away from my problemsโyouโre not supposed to run away from your problems, but when youโre 13 and your friends wonโt talk to you and they move when you sit down at the lunch table, and your mom lets you run from those problems, I think itโs a good thingโฆMy mom was my escape in a lot of ways.โ
In 2011 the singer released a song that summed up her gratitude towards her mum.
โI wrote it in the summertime, and I recorded it secretly, too. I had this idea that I wanted to play it for her for Christmas. So, when I got the track I synced up all of these home videos from when I was a little kid to go along with the song like a music video, and played it for her on Christmas Eve and she was crying her eyes out.โ
The two have been through a lot together, and together will fight this battle.
โThank you for caring about my family so much that she would want me to share this information with you,โ Taylor wrote.
โI hope and pray that you never get news like this. Love you. Taylor.โ
Our thoughts and prayers are with Andrea, Taylor and the family during this difficult time.
You can read Taylorโs letter in its entirety [here]( http://taylorswift.tumblr.com/post/115942142045/just-so-you-know =โ_blankโ)