Shannen Doherty has said she is "staying positive" after she received an elevated result on a tumour marker test, a year after she went into remission from cancer.

The former Beverly Hills 90210 star was diagnosed with breast cancer in 2015, and last year announced she was in remission.

The 46-year-old actress shared a message on Instagram sharing the results of her latest tests, posting: "Test and results. One Tumor marker test came back good. Other... elevated.

"Just means I get monitored and another test. But even after that call, I'm staying positive and taking stock of my life. It certainly helps put things in perspective and reminds you of what you learned thru the cancer journey."

"And I sometimes, need a refresher. As I've said before, cancer changes your life in ways no one could ever imagine.....btw, the elevation can be from all sorts of things. Oh and vitamin D... need more of that too."
Doherty added the hashtag "#stillacancerslayer".

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On Tuesday, the former Charmed actress shared a photograph of herself and her mother at a clinic.

She said: "Went to doctor today for tumor marker test and bone density scan. Yes, that's my mom... I figured why not. She got bone test done as well. I adore my doctor and all the great people who work there. But not going to lie, there is always anxiety waiting for test results to come back.

"Reoccurrences happen. And I can't imagine how it must feel to beat back cancer only to have it return again.
"For now, I stay positive, stay healthy and do what I can to help promote research so that cancer can be beaten once and for all. I'll keep you posted on my results.

"Btw... my mom is great!"

The "90210" star was diagnosed with breast cancer in March 2015.