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Shannen Doherty is continuing to keep fans updated on her breast cancer battle.
The 45-year-old actress took to Instagram on Friday to share a snap from a recent CT scan as she prepares for radiation.
"CT scan to do mapping for radiation plan. This scared me so much. Not sure why," Doherty wrote alongside the black-and-white shot. "Was supposed to get it with contrast but the minute they started looking at which vein to use I started crying. Full panic attack. Sometimes, you just get sick of being poked. And that's ok."
"I cried. I felt sorry for myself for a minute," she continued. "Then stopped and reminded myself of how lucky I am. Thank God my new radiation oncologist decided to try without contrast so I would calm down."
"So.... one panic attack down and mapping done!!" the actress concluded. "Now to actually start radiation... #cancerslayer #warrior #fightlikeagirl #blessed."
On Thursday, Doherty shared that she was planning to get reconstructive surgery on her breast after undergoing a single mastectomy last spring, and took fans into her doctor's office with a video thanking her surgeon for his kindness during her treatments.
"I consider myself very lucky and very blessed to have this man as my doctor," she captioned the clip of herself getting an expander, which will help her muscle tissue prepare for a permanent silicone implant.
See more in the video below.