Extranodal Follicular Lymphoma - a Retrospective Review and Comparison with Localized Nodal Follicular Lymphoma.
Bibliographic record
Abstract
Abstract Follicular lymphoma arising in an extranodal site is uncommon and its natural history and treatment is poorly characterized in the literature. We retrospectively reviewed a large cohort of patients with stage I and II follicular lymphoma and analyzed the outcomes of patients with extranodal (EN-FL) presentations to identify sites of involvement and treatment outcome, and compared these to patients with nodal follicular lymphoma. From 1967 to 1999, 668 cases of limited stage follicular lymphoma (stage I and II) were treated at the Princess Margaret Hospital. Of these, 157 cases (23.5%) presented in extra-nodal sites. The most common site of presentation was in the head and neck area (42%) followed by gastro-intestinal tract (14.6%) then skin (10.8%). The majority of patients had stage I disease (61.8%). Pathological type was follicular grade I: 22.9%, grade II: 33.1%, and grade III: 43.9%. Treatment consisted of involved field radiation therapy in 72%, combined modality therapy in 22.3% and chemotherapy alone in 3.8%. The treatment changed over time with increased use of combined modality treatment (CMT) [1967–77: 10.5%, vs. 1989–99: 33%] mainly due to the adoption of CMT for follicular grade III lymphoma. Overall complete response rate (CR) to primary treatment was 93%; the CR rate for radiation alone was 97.3%. The cumulative incidence of relapse (RR) was 44% at 10 years. The RR at 10 years was higher for patients age >60 (62% vs. 49%; p =0.059) but did not vary according to stage, tumour bulk, gender or histologic grade. For extranodal lymphoma, the 10-year overall survival (OS) rate was 56% and the 10-year disease free survival (DFS) was 42% and was similar for major sites of presentation. Comparison of Stage I–II Nodal and Extra-nodal Follicular Lymphoma Nodal Follicular Lymphoma Extra-nodal Follicular Lymphoma 10 yr Overall Survival 61% 56% (p=0.97) 10 year Disease Free Survival 41% 42% (p=0.27) 10 yr Relapse Rate 50% 44% (p=0.11) In conclusion, a significant number of patients with localized FL present with extra-nodal disease, involving diverse sites. Patients with EN-FL were more likely to have follicular grade III histology. OS, DFS and RR were similar to nodal follicular lymphoma. These results suggest that the clinical management of stage I and II extra-nodal follicular lymphoma should be the same as for nodal, and that a significant proportion of patients have prolonged DFS with radiation-based therapy.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.003 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".