Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Emergency symptoms such as trouble breathing, a seizure, sudden weakness, severe abdominal pain, uncontrolled bleeding, or confusion require immediate care.
Do not wait for a scheduled visit if symptoms return or a new mass grows rapidly.
During treatment, follow-up is frequent.
It commonly includes physical examinations, blood tests, and assessments for infection, tumor lysis, treatment side effects, and organ function.
Imaging may be repeated at planned points to measure the lymphoma's response.
Routine imaging practices vary, so patients should ask whether follow-up will rely mainly on symptoms and examinations or include scheduled scans.
Routine follow-up is also a time to review vaccinations, fertility, emotional health, school or work needs, heart health, and other possible late effects.
Live vaccines may be unsafe during significant immune suppression, so vaccination plans should be discussed with the treating team.
The article also says
After treatment, visits become less frequent over time.
The care team may ask about new lumps, fever, night sweats, weight loss, pain, abdominal symptoms, nerve changes, and recovery from treatment.
Every sign above is quoted from the sofidex article on Burkitt lymphoma. If you are not sure, err upward — it is always reasonable to be checked.