Hello @grysel25 Welcome to Mayo Connect. Cutaneous anaplastic large cell lymphoma is a bit of a rare one. From a search in our support groups the only mention I found was a possible association with a breast implant. There was no diagnosis or any treatments discussed.

But what I did find is this comprehensive website from the Cutaneous Lymphoma Foundation. I’ve posted the link below for you.
There is a menu of different topics that I think might be very valuable for you in learning more about your diagnosis, how it’s staged and possible treatment options. You can explore each topic that’s listed in the menu but I found these particularly helpful:
What is Cutaneous Lymphoma
Understanding my diagnosis
Patient Resources
About us (gives the story of the foundation)

Cutaneous Lyphoma Foundation
https://www.clfoundation.org/primary-cutaneous-anaplastic-large-cell-lymphoma
There are different types of this cancer so a clear diagnosis is important to treatment.

You asked about changing your diet. It sounds as though you’re already taking great care of yourself with exercising and not smoking or drinking. So if you’re eating a well-balanced diet, low in sugar and saturated fats with plenty of fresh vegetables, fruit, good proteins, whole grains, healthy fats, and smaller portions of meat there’s no reason to change.

Are you currently receiving any treatment? What were your symptoms?