Leah has been battling the disease for nearly a year, so Devon decided to mark the significant date by getting a portrait of Leah on his back.

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Devon Still said the complication occurred from a stem cell transplant in a previous Instagram post. It was caught early, though, and Still added “hopefully it gives the doctors a better chance of stopping it from getting aggressive.”

A photo posted by Devon Still (@man_of_still75) on May 30, 2015 at 6:47pm PDT

Leah has been in remission following chemotherapy and surgery, but her treatment has continued to prevent cancer cells from returning.