Merkel Cell Carcinoma

How do I support my partner with stage IV MCC?

My partner has stage iv MCC. It is in his bones and bone marrow.

Is it normal to have no blood marker for MCC cancer diagnosis?

MCC diagnosed in February 2025, currently undergoing immunotherapy. Oncologist says there is no known blood marker for MCC, is relying on PET scans to determine success of treatment. Does this sound right?

What does increasing blood cell counts mean after Merkel cell carcinoma surgery?

Diagnosed May 2025 when a growth on my lower eyelid was removed and determined to be Merkel. Just had additional tissue and a lymph node removed, both clear. But today learned my blood test shows increasing cell counts in my blood. Today, I'm reluctant to start searching for possible other Merkel sites. Any insights?