Jill responded that Mark needed to be seen immediately, with the musician then of course publicly announcing his diagnosis in June. In a follow-up story on his Instagram, Mark did a 'How it's going…' post, sharing a photo of himself during treatment.
In July, Mark confirmed that the chemotherapy for his diffuse large B‑cell lymphoma Stage 4‑A was working, though he still had a long fight ahead of him.
"Scans indicate that the chemo is working!" he wrote. "I still have months of treatment ahead, but it’s the best possible news. I’m so grateful and confused and also sick from last week’s chemo. But the poison the doctors pump into me and the kind thoughts and wishes of people around me are destroying this cancer. Just gonna keep fighting…”
Check out Mark's latest posts below (via Instagram stories):