The actor, who was 39, was diagnosed with stage 1 of the disease in March 2010, but was declared cancer-free two months later after beginning treatment immediately in New Zealand.
The actor's Spartacus co-star, Lucy Lawless, also paid tribute to him on her website, saying he was a 'gentle man who never had a bad world about anyone'.
However, the cancer returned in September of that year and he was advised to resume 'aggressive treatment'.