In an Instagram post, actor who played Pam Beesly in US sitcom says she hid her diagnosis with wigs and hats while undergoing treatment but is now cancer-free

The Office actor Jenna Fischer has revealed that she was diagnosed with an “aggressive” breast cancer last year and is now cancer-free after undergoing surgery, chemotherapy and radiation.

Fischer – who played receptionist Pam Beesly on the US version of The Office – shared her experience on Instagram on Tuesday to mark breast cancer awareness month.