Follicular lymphoma is often seen as an indolent disease with a reason
able medium-term survival. We have used the information in the Scotlan
d and Newcastle Lymphoma Group database to devise an index which is ea
sily calculated and differentiates patients into poor, intermediate an
d good prognostic groups with 5 year survivals of 24%, 61% and 86% res
pectively. The key factors at presentation are age, ECOG performance s
tatus, stage and the presence or absence of B symptoms or gastro-intes
tinal tract involvement. The use of such an index permits early identi
fication of patients with a poor prognosis for whom more intensive tre
atment could be offered.