Perspective behind this site
PMBCL.com is written from lived experience of PMBCL. Its author is not a physician. Medical facts come from the named organizations linked beside the relevant text and collected in each page's sources section.
Content is currently awaiting formal medical review. This is stated on every page so readers can judge its limits clearly.
Two kinds of information
Everything on this site falls into one of two clearly separated categories:
- Medical facts — what PMBCL is, how it's generally treated, what tests mean. These always sit next to a link to a named medical organization.
- Lived-experience notes — observations about what this experience is commonly like: which worries are widespread, which topics people return to. These appear in boxes labelled “From lived experience” and link back to this page.
Keeping these apart matters. One tells you what is medically known; the other tells you that a feeling is shared. Neither is a prediction about your own situation.
The medical facts
For anything medical, this site points to established patient-information organizations rather than asking you to take our word for it. Depending on the page, that includes the US National Cancer Institute, the American Cancer Society, Lymphoma Action, Macmillan Cancer Support and CancerCare. Every page lists the specific sources it drew on, with the date the links were checked.
This site does not conduct or publish original medical research, and its text has not yet been through formal medical review — something noted openly in the footer of every page.
The lived-experience notes
When a box says something like “scans are the single most discussed topic” or “a striking number of posts come from caregivers”, that observation comes from a structured analysis of public patient conversation, carried out in July 2026.
In short, the analysis looked at:
- 537 public posts from the r/lymphoma community, published between 2017 and 2026, that mentioned PMBCL or its longer names.
- Readable text was available for 432 of them; the rest had been removed or deleted and were counted only for coverage, never quoted.
- What people talked about: recurring themes, the questions they asked, and whether a post came from a patient or someone close to them.
The observations this site references from that analysis include:
- Scans — PET results, residual masses, Deauville scores, scan anxiety — were the most common theme, appearing in about 43% of readable posts.
- Anxiety, fear and “scanxiety” language appeared in roughly 29%.
- Practical life — recovery, work, insurance and finances — came up often, as did fertility questions.
- A substantial share of posts came from caregivers and family, not patients themselves.
How the analysis was done
The posts were gathered from a public Reddit archive on a single collection date, then tagged by topic with automated, case-insensitive keyword rules. Counts are at the post level — one post can belong to several topics at once.
Privacy was built in: no author names or account identifiers were stored, comments were not collected, and posts that Reddit or the archive had marked as removed or deleted kept only their coverage metadata — their text was left blank so that inaccessible personal stories were not republished.
What it can — and cannot — tell you
This kind of analysis has real limits, and it's important to be plain about them:
- It describes conversation, not medicine. That a topic is discussed a lot says nothing about how common, serious or treatable it is.
- The people who post are self-selected. They are not a representative sample of everyone with PMBCL, and this data is not epidemiology.
- It never predicts your situation. Numbers about what a community talks about cannot say anything about your diagnosis, treatment or outcome.
- Clinical status can't be verified from a post, and keyword tagging can miss things or over-count.
So why include these notes at all? Because when you're frightened, it genuinely helps to know that a fear — the dread before a scan, the loneliness of the weeks after treatment — is one that many other people have felt too. That is the only thing these notes are meant to tell you: you are not alone in this. For anything about your own health, your medical team is the source that matters.
Medical facts come from named medical organizations. “From lived experience” notes come from a transparent, privacy-preserving analysis of public patient conversation — and describe shared feelings, never your outcome.
Corrections and updates
If you find an outdated source, factual error or unclear passage, email info@pmbcl.com. Include the page address and the passage. Corrections are checked against the named source before publication.